1.If the magnification of a virtual
image formed by an object 10cm from a convex lens is 3, then the focal length of
the lens is ...
A. 10cm
B. 20cm
C.25cm
2. Which of the following is
obtained when magenta is mixed with green colour?
A. Yellow
B. Blue
C.White
3. Which of the following statements
about wave motion is correct?
A. Electromagnetic waves are
transverse
B. Transverse waves do not require a
medium for propagation
C. Longitudinal waves vibrate
perpendicularly to the direction of travel
4.Shadows and eclipse result from
the ....
A.reflection of light
B.rectilinear propagation of light
C.diffraction of light
5. A pool of water appears
1.00m deep when viewed vertically from above. What is the actual depth of the
pool? [Refractive index of water is 1.33 ].
A. 13.300m
B. 0.750m
C. 1.013m
D. 1.330m
6. Which of the following waves is
both transverse and mechanical?
A. Water waves
B. Radio waves
C. Sound waves
7. Which of the following
electromagnetic waves has the shortest wavelength?
A. Visible light
B. Ultraviolet light
C. Infrared ray
8. A boy in a barber`s shop sits
between two parallel mirrors. The number of
images observed by him will be…
A. infinite
B. ten
C. eight
9. The frequency of the beats
produced when two tuning forks of
frequencies 258Hz and 270Hz are sounded close to each other is ….
A. 6Hz
B. 264Hz
C. 528Hz
10. The instrument used to view
stars is the …
A. prism binoculars
B. telescope
C. film projector
11. An object is placed 15cm in
front of a plane mirror. If the mirror is moved further 5cm away from the
object, the distance between the object and the image is ….
A. 80cm
B. 40cm
C. 50cm
12. If the distance between the
object and the pinhole of the pinhole camera is reduced by half, the size of
the image of the object …..
A. is quadrupled
B. is halved
C. remains the same
13. Myopic defects in the human eye
can be corrected through the use of a ….
A. concave mirror
B. concave lens
C. prism
D. convex lens
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