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PRACTICE:Physics Unit25: Optical Instrument



 Author: physicsPublish Date: 2023-05-01 10:01   Total Marks: 51 mks  Marks Awarded: _____________

User Name: No Login  Start Time: 23年05月01日 09:35  Switch to Whole-Paper Mode

Mark Problem
1#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The length of time the shu. ud)lii zia6xn7;;ratter is open and the film is exposed in a camera is detera;nx;76ir .) uiildza mined by the

Correct Answer:    

Mark Problem
2#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The amount of light reaching the o8d5uepejgd1. *6vwj2gv u e9film in a camera is determined by the

Correct Answer:    

Mark Problem
3#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In a single-lens reflex camera the lens-film distance;vyh+rutl /n iz z;)u1 may be varied by sliding the lens forward or b h;y+n;tluvi1)z z ru/ackward with respect to the camera housing. If, with such a camera, a fuzzy picture is obtained, this means that

Correct Answer:    

Mark Problem
4#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that covers the film with a field7n82b 4ix t.:k;7cmfmy igto x of view that corresponds approximately to that of normal vision is refer nm8i.gtk2o:; x7tb4xm fcy 7ired to as a

Correct Answer:    

Mark Problem
5#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that acts like a telescope to magnif8 aw2 mrli5.wu3(wo axy images is referred to as a

Correct Answer:    

Mark Problem
6#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A camera lens that covers the film withfvg490;yba:; j- nwx jaqj bn h+iv4+v a wider field of view than that of the eye and through which objects appear f9h0b:;n-aybjvi 44vgn+ ;+xawj jqvsmaller is referred to as a

Correct Answer:    

Mark Problem
7#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  In which of the following ways is a camera different from the human en5)zs/qv 7 hqr 6(vqrlye?

Correct Answer:    

Mark Problem
8#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The principal refraction of light by the eye occuruo zok1wgj63 /7 v7* hgl zobg.0r-opfs at the

Correct Answer:    

Mark Problem
9#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The closest distance at which an eye can see obg ,fc4( qz,cbbjects clearly is

Correct Answer:    

Mark Problem
10#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The farthest distance at which an eye can see objects cleaortyw0 db5-.mrly is

Correct Answer:    

Mark Problem
11#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If a person's eyeball is k3:to w mh-(/y yc1 xsspfa +ch6wat)1too long from front to back, the person is likely to suffer frkym o s tc1f h()txw-3/a+1 h:apsycw6om

Correct Answer:    

Mark Problem
12#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Nearsightedness can usual*kx)n,6/z iz i1rinslly be corrected with

Correct Answer:    

Mark Problem
13#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too long from fsw0* er xo-lr9ront to back, this gives rise to a vision defect that can e xwo- sr9r0l*be corrected by using

Correct Answer:    

Mark Problem
14#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If a person's eyeball is t0sjp;a(q pg pgrf5.l n6o+u ;too short from front to back, the person is likely to sgt.n ;; sgauprjf+lp6q p(50ouffer from

Correct Answer:    

Mark Problem
15#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Farsightedness can usut9 08a1r2x0 pf yoe uul5ttl,jally be corrected with

Correct Answer:    

Mark Problem
16#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the human eyeball is too short from front tfgsgz2y 05v g7+(( wiht 2bgypt qlj-az rn,6.o back, this gives rise to a vision defect g05t(aqwrfyyg h+7,t2p -6 zvjs2(g. gl nzbi that can be corrected by using

Correct Answer:    

Mark Problem
17#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What type of lens is a magnifyingyz9 (s u2m*bco dp0zypk:+p g9 glass?

Correct Answer:    

Mark Problem
18#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  An important reason for using a very large di spw6w0 tstqh-1+ ylt9ameter objective in an astronomical ts9pt w0q+t h6-l stw1yelescope is

Correct Answer:    

Mark Problem
19#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Consider the image formed by a refracting telescop;vk9xc3+yugu j(u. gze. Suppose an opaque screen is placed in front of the lowe3uyvk ; g(+j 9.uxzcgur half of the objective lens. What effect will this have?

Correct Answer:    

Mark Problem
20#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Assuming the film used has uniform sensitivity c(i8piwygjuo*9m*-0us32s y y s qv7ithroughout the visible spectrum, in which of the following cases would you s8* ui37isiujywpo-g2q9yycv (0s* mbe able to best distinguish between two closely spaced stars? (The lens referred to is the objective lens of the telescope used.)

Correct Answer:    

Mark Problem
21#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A refracting telescope has a magnificat0fn (;s*.ybl :glwtvx ion $m$. If the objective focal length is doubled and the eyepiece focal length is halved, what is the new magnification?

Correct Answer:    

Mark Problem
22#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  With what color lightw-xja k :6 q+cvafgy5zh0m,o5 would you expect to be able to see the greatest detail when using f ay:x0 vw5cg,6+-hmq5jazo ka microscope?

Correct Answer:    

Mark Problem
23#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical lenses suffer ffpn+3t*wz 80egvxx5 lw.e2sd pu:8x xrom

Correct Answer:    

Mark Problem
24#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  Spherical mirrors suffersl/d 1,/ljwck from

Correct Answer:    

Mark Problem
25#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The resolving power of a microscope refers to the ability t px1/nnw;kar3490j /h 7w)dm bnvpuhu o

Correct Answer:    

Mark Problem
26#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  If the diameter of a radar dish id4ya s/mr.r7 vsw8jezr qud9g: d*;t1 s doubled, what happens to its resolving power as/19rd 8sweu4qdgm .y;av7rs *z r dtj:suming that all other factors remain unchanged? Its resolving power

Correct Answer:    

Mark Problem
27#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A near-sighted person 8;gfk,eg95t1akd(mk/tt jd hhas a far point of 18 cm. What lens (in diopters) will allow tkm;g taefk15d 9, /8tjgh(kdthis person to see distant objects clearly?

Correct Answer:    

Mark Problem
28#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person cannot see clearly objects more than 70.0 cm away. Wha/o x8 mt+ijf9tt power of lens s/oit+m98fxt j hould be prescribed if the glass is to be worn 1.00 cm in front of the eye?

Correct Answer:    

Mark Problem
29#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A nearsighted person weartn40z9z*gd1edaagx 0 s glasses whose lenses have power of -0.15 D. What is the person's far point if the glasses are very close to t0n 0 d1de*4x zag9ztgahe eyes?

Correct Answer:    

Mark Problem
30#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  What power lens is needed -gwlm+), cultndo7k9eu -n9s to correct for farsightedness where the uncorrected near uu tnk-,+7d)elm- w l9o cngs9point is 75 cm?

Correct Answer:    

Mark Problem
31#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The near point of a farsighted person is 100 cm. She places reading glassesbx;gn5omf;m+/ 0kkvi close to her eyes, and with them she can comfortably rekkni+gf 5/x0; ;bvm omad a newspaper at a distance of 25 cm. What lens power is required?

Correct Answer:    

Mark Problem
32#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A farsighted person can read a newspaper held 25 cm from his eyes, if he wear d-u-i)w2dbl (1ishkns glasses du iw)-kid( -sb12 nhlof
+3.33 diopters. What is this person's near point?

Correct Answer:    

Mark Problem
33#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying lens has a focal length of 10 cm. A person has a near point gh7 0;4.7mq sjrkbsza of 25 cm. What is the magnification of the lens for that perms; sab77q.hr j4kz0gson when their eyes are focused at infinity?

Correct Answer:    

Mark Problem
34#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying lens has a focalnp*8uo -k l xiyjt1(g/wbc* 0h length of 10 cm. A person has a near point of 25 cm. What is the magnification of the lens for that person when their eyes are focused at thei/w1lkx0 bun* pij( tgc*-y8ho r near point?

Correct Answer:    

Mark Problem
35#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A magnifying glass has a focal length of 7.0 cm. What is tha icf52tj8ail7 *n)ise magnification if the ila8t2 f*n 7icjs 5)aiimage is viewed by a relaxed eye?

Correct Answer:    

Mark Problem
36#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging lens of focal length 5.0 cm as a magnifying glas jw tps9h5bba2/zgq; xm3 ;zri h+of0-s. What is the maximum pos3p;ts+/o2jbr 0-5xgabzif 9;w zmqhhsible magnification?

Correct Answer:    

Mark Problem
37#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person uses a converging lens of focal length 5.0 cm as a magnifying glq9a0m6gf4 y tg)o ;q1gv oqco1ass. What is the magnification if the o ga y6c)vqg;g foq1o9t410 mqperson's eye is relaxed?

Correct Answer:    

Mark Problem
38#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses of focal leng ,s05a(5 29lyhxqdcsd qd bn.cths 2.0 cm, 4.0 cm, 8.0 cm, and 16.0 cm. If you were to use any two of these lenses to build a telescope, what is the maximum9qddl. b (,cs sn0cxay5q5 dh2 magnification you could achieve?

Correct Answer:    

Mark Problem
39#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  You have available lenses of focal le m-cmdfb3k :s-ngths 2.0 cm, 4.0 cm, 8.0 cm, and 16 cm. If you were to use any two of these lenses to bui3fm bmc:- dsk-ld a telescope, what is the lens separation for the maximum magnification telescope?

Correct Answer:    

Mark Problem
40#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The objective of a telescope has a foc+c)kr7w tu ,i:y zxwn mbo;6q9al length of 200 cm and its eyepiece has axwmqwk6y9zt)o,7un + bc : ;ri focal length of
1.1 cm. What is the magnification of this telescope when viewing an object at infinity?

Correct Answer:    

Mark Problem
41#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs an astronomical telescope with a magnifiu2dgi k910dvication of 10. If the telescope has a converging lens of focal length 50 cm, what is the focal length of the 2id guv1k id09eyepiece?

Correct Answer:    

Mark Problem
42#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A student constructs an2l(a4,3uri kp(cao hz astronomical telescope with a magnification of 10. If the telescope has a converging lens of focal length 50 cm, what is the resuoh auirl2 ka3,zpc(4(lting length of the telescope?

Correct Answer:    

Mark Problem
43#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A person is designing a 10X telescope. If the telescope k 2x )(:or6ij0e:yjtb2yatcc is limited to a length of 20 cm, what is the approximate focal le )ajikcbtx6o:yy :(t0j r22ecngth of the objective?

Correct Answer:    

Mark Problem
44#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A microscope has an objective lens of focal length 1.4 mm a1n3s )ekj cdz(ai.8nn cw,n(p nd an eyepiece of focal length 20 mm, adjusted for minznejwdn 38icc 1(pn ,.aks)(nimum eyestrain. A blood sample is placed 1.5 mm from the objective. How far apart are the lenses?

Correct Answer:    

Mark Problem
45#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A microscope has an objective llr xls/l,2gg3c8bj 3cens of focal length 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,cgl2gcl xb383r/ ljs is the overall magnification?

Correct Answer:    

Mark Problem
46#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has an obdxgeg1(bg 3qy.dw(.b j( dum. jective with a focal length of 3.00 mm and an eyepiece of focal length 6.00 cm. If the twogw(3bg(.1b.dx q. gd duejm(y lenses are separated by 40.0 cm, what is the total magnification?

Correct Answer:    

Mark Problem
47#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope has a 18-cm barrel and an objective with z xj-rs;k9:*rwfqpa0ek z*f. h..aj z a focal length of 8.0 mm. What is the focal lengt9.fj-w:z .e aazhpj;s*0rk.qxrz kf*h of the eyepiece to give a total magnification of 240?

Correct Answer:    

Mark Problem
48#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A binary star system in the constellation Orion4;qndh k chj7, has an angular separation of 10-5 rad. If the wavelength of the light j, h ;7ch4kdnqfrom the system is 500 nm, what is the smallest aperture (diameter) telescope that can just resolve the two stars?

Correct Answer:    

Mark Problem
49#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  A compound microscope is designed tozm64 -mnty v*4en2xx d resolve objects which are 0.010 mm apart. If the focal length of the objective is 4.0 cm and the wavelength of light used is 550 nm, what is the diameter m4e-4*nyd nmx z xt2v6of the objective?

Correct Answer:    

Mark Problem
50#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The pupil of a person's eye changes from a j; eii18d:ez7fd kt 58pmgu+xdiameter of 3.5 mm to 1.5 mm as the illumination is ud5; +8fdg7kpm t1e8ijezx:i increased. By what factor does the minimum angle of resolution change?

Correct Answer:    

Mark Problem
51#
 
Single-Choice ( 1.0 marks) Whole-Paper View Save Problem  
  The 2.4-m reflecting Hubble Space Telescope h ,ms9-zqz1 kdyas been placed into Earth orbit by the space shuttle. What angular res 9z-q1kdy zm,solution could this telescope achieve if the wavelength is 500 nm?

Correct Answer:    

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