Physics Unit25: Optical Instruments - 无忧得胜-网上国际课程 (5edu.win)

1#

The length of time the shutter is open and the film isxhfvq a1n80 t) exposed in a camera is determinedh vtf8 qn0ax)1 by the

A. shutter speed.

B. f-stop.

C. focusing.

D. none of the given answers

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The amount of light reaching the film in a camera is determined byk:xdu*;+ vm kjx5wpndr i 73q: the

A. shutter speed.

B. f-stop.

C. focusing.

D. none of the given answers

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In a single-lens reflex camera the lens-fila1iv3 4h 0-9ygiewcg km distance may be varied by sliding the lens forward or backward with respe i3cg1v0 heik9-ay4 gwct to the camera housing. If, with such a camera, a fuzzy picture is obtained, this means that

A. the lens was too far from the film.

B. the lens was too close to the film.

C. too much light was incident on the film.

D. too little light was incident on the film.

E. none of the given answers

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A camera lens that covers t:bs al4c:pqck0 : rb:the film with a field of view that corresponds approximately to that of normal vision is ta:4:bk::p rbc0qlc s referred to as a

A. normal lens.

B. telephoto lens.

C. wide-angle lens.

D. zoom lens.

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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A camera lens that acts liz5elq :*dj fi0gfej2i-p + ay4ke a telescope to magnify images is referred to as a

A. normal lens.

B. telephoto lens.

C. wide-angle lens.

D. zoom lens.

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6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A camera lens that covers the filme u8.q8vb/ n+axa3pj lw4jqs1 with a wider field of view than that of the eye and through which objects appblp/ 8j x.8nuw1qqaa+jv3e s4ear smaller is referred to as a

A. normal lens.

B. telephoto lens.

C. wide-angle lens.

D. zoom lens.

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7#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

In which of the following ways isav1+e/nesjw)b.ci0 5ps) f qw a camera different from the human eye?

A. The camera always forms an inverted image, the eye does not.

B. The camera always forms a real image, the eye does not.

C. The camera utilizes a fixed focal length lens, the eye does not.

D. For the camera, the image magnification is greater than one, but for the eye the magnification is less than one.

E. A camera cannot focus on objects at infinity but the eye can.

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8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The principal refraction of light by the eye oc4tj3 -by70glpb yixlv1 s3 +urcurs at the

A. cornea.

B. lens.

C. retina.

D. iris.

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9#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The closest distance at which an eye canfzhyje6*c7 n 4 see objects clearly is

A. the near point.

B. the far point.

C. nearsightedness.

D. farsightedness.

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10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The farthest distance at which an eye can see obje.zovt w0c/ 3qrcts clearly is

A. the near point.

B. the far point.

C. nearsightedness.

D. farsightedness.

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11#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If a person's eyeball is too long from front to back, the person is likely t tkjga. xs/z06yen11io sufferz0x6iag e.t/s1y1 nj k from

A. spherical aberration.

B. nearsightedness.

C. farsightedness.

D. astigmatism.

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12#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Nearsightedness can usually be corrected wikw:c mgjc4:8f th

A. converging lenses.

B. diverging lenses.

C. achromatic lenses.

D. cylindrical lenses.

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13#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the human eyeball is too long from front to back, this gives rise toi6hf3p 0eo:kwb ush;4 a vision defect that can be correcte 43ps0 ekhiu:6;hbfowd by using

A. convex meniscus eyeglasses.

B. concave meniscus eyeglasses.

C. cylindrical eyeglasses.

D. contact lenses, but no ordinary lenses.

E. shaded glasses (i.e., something that will cause the iris to dilate more).

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14#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If a person's eyeball is too sh zxzm0,hqz9 xkutk 438ort from front to back, the person is likely to suffzx k09qkmh 4x,ztz38uer from

A. astigmatism.

B. spherical aberration.

C. farsightedness.

D. nearsightedness.

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15#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Farsightedness can usually be corrected with 45oi vit-a875v p1m,daff)uvlqvvq 8

A. cylindrical lenses.

B. achromatic lenses.

C. diverging lenses.

D. converging lenses.

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16#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the human eyeball is too short from front to back, tr(5e c:isvq d+his gives rise to a vision defectv(+rcisq5e d: that can be corrected by using

A. convex meniscus eyeglasses.

B. concave meniscus eyeglasses.

C. cylindrical eyeglasses.

D. contact lenses, but no ordinary lenses.

E. shaded glasses (i.e., something that will cause the iris to dilate more).

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17#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What type of lens is a magnifyi4x2z0 x6aqw8ek f oor*ng glass?

A. converging

B. diverging

C. spherical

D. cylindrical

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18#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An important reason for using a very larger(t b-h+w) e+n h;brrg:mgkiqdan 3,8 diameter objective in an astronomicali++rd (b -kmb)8:rrq,ew;htnang 3hg telescope is

A. to increase the magnification.

B. to increase the resolution.

C. to form a virtual image, which is easier to look at.

D. to increase the width of the field of view.

E. to increase the depth of the field of view.

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19#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Consider the image formed by a refracting telescope. Suppose an opxqdy1p 4p 7fkj x(lb7*aque screen is placed in front of the lower half of the obb1x l*pp xkyj4d(f77 qjective lens. What effect will this have?

A. The top half of the image will be blacked out.

B. The lower half of the image will be blacked out.

C. The entire image will be blacked out, since the entire lens is needed to form an image.

D. The image will appear as it would if the objective were not blocked, but it will be dimmer.

E. There will be no noticeable difference in the appearance of the image with the objective partially blocked or not.

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20#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Assuming the film used has uniform sensitivity thr:ryv 2;z*hmo 9 rx7ltioughout the visible spectrum, in which of the following cases would you be able to best distinguish between two2 y9zolr;*irv7:txh m closely spaced stars? (The lens referred to is the objective lens of the telescope used.)

A. use a large lens and blue light

B. use a large lens and red light

C. use a small lens and blue light

D. use a small lens and red light

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21#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A refracting telescope has g ofse:09gr1l a magnification $m$. If the objective focal length is doubled and the eyepiece focal length is halved, what is the new magnification?

A. $4 \; m$

B. $2 \; m$

C. $m/2$

D. $m/4$

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22#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

With what color light would you expect to be able to sgxu06i axr ,b9ee the greatest detail when using a microsco09x, ir6bag uxpe?

A. red, because of its long wavelength

B. yellow, because of its right wavelength

C. blue, because of its shorter wavelength

D. Color does not matter.

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23#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Spherical lenses suffer 01d 2uz7.phh 9kfr lha,e9m;g-dnhdvp dh- n- from

A. both spherical and chromatic aberration.

B. spherical aberration, but not chromatic aberration.

C. chromatic aberration, but not spherical aberration.

D. neither spherical nor chromatic aberration.

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24#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Spherical mirrors suffer fromv9 v ,)i0lumbdu14 wov

A. both spherical and chromatic aberration.

B. spherical aberration, but not chromatic aberration.

C. chromatic aberration, but not spherical aberration.

D. neither spherical nor chromatic aberration.

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25#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The resolving power of a microscope refers topnjq .;bwe2on .*zu 9n the ability to

A. distinguish objects of different colors.

B. form clear images of two points that are very close together.

C. form a very large image.

D. form a very bright image.

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26#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If the diameter of a radar dish is doubled, what happens tm o* j9lb(yrbo-h3js 7o its resolving power assuming that all other factors remain unchanged? Its resoll3 ( 9 mohbj-r7*jybosving power

A. quadruples.

B. doubles.

C. halves.

D. is reduced to one-quarter its original value.

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27#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A near-sighted person has a far point of 18 cm. What lens (in diopters) wil/ffahfr5, k78icm9yg6yw) (g ywr l2fl allow m rgy r,iw275f9 y(ghkf6l/ayc8 ffw) this person to see distant objects clearly?

A. +5.6 D

B. -5.6 D

C. +0.056 D

D. -0.056 D

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28#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A person cannot see clearly oxc0r9t:g 4 www.1 x1fuiyer9fcj.uq) bjects more than 70.0 cm away. What power of lens should be prescribed y.wrj.)9g0r ef: 1fw qctxwu91x4i ucif the glass is to be worn 1.00 cm in front of the eye?

A. $1.45 \; D$

B. $-1.45 \; D$

C. $0.0145 \; D$

D. $-0.0145 \; D$

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29#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A nearsighted person wears glasses whose lenses have power po;b p/rc+/ww5kvs k+of -0.15 D. What is the person's fasro/pp5cvk/bww+k+; r point if the glasses are very close to the eyes?

A. $1.5 \; m$

B. $3.3 \; m$

C. $6.0 \; m$

D. $6.7 \; m$

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30#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

What power lens is needed to correct z,enhilfsi x;pt.+ )9for farsightedness where the uncorrected near point i +.;,ple)x9hsztf in is 75 cm?

A. +2.7 D

B. -2.7 D

C. +5.3 D

D. -5.3 D

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31#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The near point of a farsighted person imv2ot/,oh4, / ytngnphfp m /9s 100 cm. She places reading glasses close to her eyes, and with them she can comfortably reapt24/9yv/m,fm /gn ,n t phohod a newspaper at a distance of 25 cm. What lens power is required?

A. +2.5 D

B. +3.0 D

C. +3.2 D

D. -2.0 D

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32#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A farsighted person ca.1d p:m oomjh86x8vman read a newspaper held 25 cm from his eyes, if he wears gla j. pmd :o88xo6hvm1masses of
+3.33 diopters. What is this person's near point?

A. $4.2 \; cm$

B. $25 \; cm$

C. $31 \; cm$

D. $1.5 \; m$

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33#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A magnifying lens has a focal length of 10 cm. A person has (84 pra*8g5jqzd qt r lac2yc5a near point of 25 cm. What is the magnification of the lens for thdcaq yqr*5( jztp rc482l85gaat person when their eyes are focused at infinity?

A. 1.5

B. 2.5

C. 3.5

D. 4.5

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34#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A magnifying lens has a focal length of 10 cm. A per5 zxkgo8izc87 son has a near point of 25 cm. What is the magnification of the lens ig c8o8zkz75x for that person when their eyes are focused at their near point?

A. 1.5

B. 2.5

C. 3.5

D. 4.5

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35#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A magnifying glass has a focalo rto22e4t0 b 48 i zj/q4biwrhuy0mo4 length of 7.0 cm. What is the magnification if the image is0mrbe jh8i42o4 4t2i0/owro ytzbu 4 q viewed by a relaxed eye?

A. 1.6

B. 2.6

C. 3.6

D. 4.6

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36#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A person uses a converging lens of focal length 5.0 cm as a magnifying+v bn. 57zkkif glass. What is the maximum pozvk+ibk 57.fn ssible magnification?

A. 4.0

B. 5.0

C. 6.0

D. 7.0

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37#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A person uses a converging lens of focal length 5.0 cm as a magnifying glass. :a40 vb9 xtvk*v6licmWhat is the magnification if the perso09 :cvla mivkv4*txb6 n's eye is relaxed?

A. 4.0

B. 5.0

C. 6.0

D. 7.0

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38#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

You have available lenses of focal len1xxwh 4sih :3pgths 2.0 cm, 4.0 cm, 8.0 cm, and 16.0 cm. If you were to use any two of these lense 4:whix3hx1pss to build a telescope, what is the maximum magnification you could achieve?

A. 2.0

B. 4.0

C. 6.0

D. 8.0

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39#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

You have available lenses of focal lengths 2.0 cm, 4.0 cm, 8.0 cm, and (jai en).6d(hr1h cithee5t yea*a3316 cm. If you were to use any two of these 3dcne hi*ateh(3j5i(ea.hrt)e6y1 a lenses to build a telescope, what is the lens separation for the maximum magnification telescope?

A. $10.0 \; cm$

B. $12.0 \; cm$

C. $18.0 \; cm$

D. $24.0 \; cm$

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40#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The objective of a telescope has a focal length o*a il n fh a2u0b;ihojc1m;x0;f 200 cm and its eyepiece has a focal length ofii*nba j0;h1 h0clm o2; f;xau
1.1 cm. What is the magnification of this telescope when viewing an object at infinity?

A. 20

B. 0.0050

C. 200

D. none of the given answers

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41#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A student constructs an astronomical telescope wit 3hbzzwvn/:ds 8rezfuh 9+f*0h a magnification of 10. If the telescope has a converging lens of focal length 50 cm, what is the focal lengtf3bdnfz/ *8h9+u :0vezzrw h sh of the eyepiece?

A. $2.5 \; cm$

B. $5.0 \; cm$

C. $10 \; cm$

D. $25 \; cm$

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42#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A student constructs an astrob t oao6h.:k8onomical telescope with a magnification of 10. If the telescope has a converging lens of focal length 50 cm, what is the resulting length ok b6 oato:o.8hf the telescope?

A. $53 \; cm$

B. $55 \; cm$

C. $60 \; cm$

D. $75 \; cm$

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43#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A person is designing a 10X telescope. If the telescope is lfb1i d1hm/ d0p8jt :ovimited to a length of 20 cm, what is the approximate focal length of thhd8dj1tbv /pom0 :if1e objective?

A. $16 \; cm$

B. $17 \; cm$

C. $18 \; cm$

D. $19 \; cm$

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44#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A microscope has an objective lens of focal length 1.4 mm and an eyepiece of fakh227jbmwl9fu; wn; d *, uygocal length 20 mm, adjusted for minimum eyestrain. A blood sample is k 972,*wbwy h 2j;f ldu;umgnaplaced 1.5 mm from the objective. How far apart are the lenses?

A. $20 \; mm$

B. $21 \; mm$

C. $23 \; mm$

D. $41 \; mm$

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45#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A microscope has an objective lens of focal 4 hr 2a ,4rl6wyzhfyidis,e;6length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. What is the overall; ehd ,6silr a 62zy4fy,h4riw magnification?

A. 18

B. 37

C. 180

D. 370

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46#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A compound microscopebh 9sg: *xs 0nxl +.-tbn. ks3m:yfgqv has an objective with a focal length of 3.00 mm and an eyepiece of focal length 6.00 cm. If the two lenses are separated by 40. x :xk:0 q.ngs*3.+bf lgy-vmsths bn90 cm, what is the total magnification?

A. 27.8

B. 55.6

C. 278

D. 556

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47#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A compound microscope has a 18-cm bio:ye:8 c60.pbic g bhdia 1e)arrel and an objective with a focal length of 8.0 mm. What is the focal leng: .y 6g:c 80ebpcbd1iei) iohath of the eyepiece to give a total magnification of 240?

A. $0.13 \; cm$

B. $1.5 \; cm$

C. $1.9 \; cm$

D. $2.3 \; cm$

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48#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A binary star system in the co:v( qe)s;d dhsnstellation Orion has an angular separation of 10-5 rad. If the wavelength of the light from the system is 500 nm, what is the smallest aperture (diameter) telesc)seqhv ds :(;dope that can just resolve the two stars?

A. $0.50 \; cm$

B. $0.61 \; cm$

C. $5.0 \; cm$

D. $6.1 \; cm$

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49#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

A compound microscope is designed to resolve objects which are 0.010 ke/uub 5nm7 74(n3cmkyz h3ckmm apart. If the focal length of the objective is 4.0 cm and the wavelength of lighk ( m7 ymbnk 73hnu/k5c4ceu3zt used is 550 nm, what is the diameter of the objective?

A. $0.27 \; mm$

B. $0.54 \; mm$

C. $2.7 \; mm$

D. $5.4 \; mm$

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50#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The pupil of a person's eye changes from a diameter of 3.5 mm to 1.5 mm as +yl6bi bltj1-g 5yxq0(xdk 6s the illumination is increased. By what factor does the miniiybk(15xt q 0-xlyd b+6lsjg6mum angle of resolution change?

A. 0.43

B. 0.65

C. 2.0

D. 2.3

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51#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The 2.4-m reflecting Hubble Space Telescope has been placaoe + i(v.dry6ed into Earth orbit by the space shuttle. What angular resolution could this telese+.( iayr o6dvcope achieve if the wavelength is 500 nm?

A. $2.5 \times 10^{-7} \; rad$

B. $3.6 \times 10^{-7} \; rad$

C. $5.7 \times 10^{-7} \; rad$

D. $6.8 \times 10^{-7} \; rad$

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本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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