1.What wave property can best explain the apparent bending of a pencil when it is
dipped into a glass of water ?
A. reflection B.refraction C.diffraction D. dispersion
2.Which is true of a converging lens?
I.Refract parallel rays of light
II. Converge parallel rays of light
III.Thicker in the center than at the edges
A. I and II only B. I and III only C. II and III only D. I,II and III
3.Which of the following is NOT a good description of a polarized wave? It is a .
A. light wave
B. transverse wave.
C. longitudinal wave
D. wave that vibrates in one direction.
4. A ray of light falls on a very smooth and shiny metal at an angle of 280 with the surface.At
which angle would the light be reflected?
A. 0
0 B. 140 C. 280 D. 560
5.Where does light travel the fastest?
A. air B. glass C. water D. vacuum
6.It is the bending of light when it enters another boundary,which is it?
A. diffraction B. dispersion C. reflection D. refraction
7.What lens will correct a farsighted vision person?
A.biconvex lens B.concave lens C.convex lens. D.handy lens
8.Which objective piece of a telescope is good to look at distant objects?
A. 5cm B. 8cm C.10cm D.15cm
9. Which eyepiece will give a better view of an object?
A. 5cm B. 8cm C.10cm D.15cm
10.It is an optical instrument that works like a human eye,which is it?
A. binocular telescope B. camera C. handlens D. microscope
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11.A plane mirror will produce a laterally inverted image,facing the mirror you moved to the
left,where are you moving on the mirror?
A. left B. right C. forward D backward
12. A nearsighted person needs a concave lens, this lens can make the image fall
A. on the eyeball
B. on the retina of the eye
C. before the retina of the eye
D. beyond the retina of the eye
13. The film corresponds to the retina of the eye,which image is formed on the retina?
A erect, real and smaller C. inverted, real and smaller
B .erect, virtual and larger D. inverted, virtual and smaller
14. What will happen to light rays when it hits a concave mirror?
A. Reflected B. Refracted C. Polarized D. Dispersed
15.Which glass is used to reduce the painful glare coming from the intense beam of the
sunlight?
A.Concave B. Convex C.Plane D. Polaroid
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Answer:
A
A
C
A
B
Explanation:
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