Q1.
Sound cannot travel through___________.
ⓐ solid
ⓑ
water
ⓒ vacuum
ⓓ air
Q2.
Which of the following is a natural source of light?
ⓐ sun
ⓑ stars
ⓒ moon
ⓓ Both
“a” and “b”
Q3. The light from the sun reaches on the
earth after _________.
ⓐ 5 minutes
ⓑ 6 minutes
ⓒ
8 minutes
ⓓ 7 minutes
Q4.
The object that completely block the light is called ______ objects.
ⓐ translucent
ⓑ transparent
ⓒ opaque
ⓓ None of these
Q5. The speed of sound is slowest in __________.
ⓐ water
ⓑ air
ⓒ iron
ⓓ stone
Q6.
Which of the following objects reflect maximum light?
ⓐ paper
ⓑ water
ⓒ mirror
ⓓ Earth surface
Q7.
How does light travel in the air?
ⓐ in a circle
ⓑ along curved path
ⓒ straight
line
ⓓ None of these
Q8.
Sound is produced by __________ a body.
ⓐ vibrating
ⓑ rotating
ⓒ circulating
ⓓ these all
Q9. The light reflected from the moon reaches the earth in __________.
ⓐ 1.5s
ⓑ 8m
ⓒ 1.5m
ⓓ 8s
Q10. Identify opaque objects.
ⓐ wooden door
ⓑ glass
ⓒ paper
ⓓ these all
Q11.
When object is near to the source of light its shadow will be________.
ⓐ smaller
ⓑ normal
ⓒ bigger
ⓓ none of these
Q12. Intensity of sound is decreased with
________ of distance from its source.
ⓐ decrease
ⓑ increase
ⓒ same
ⓓ None of these
Q13. Sound travels faster trough _________.
ⓐ solid
ⓑ liquid
ⓒ gas
ⓓ air
Q14. The approximate speed of sound in air is
_________.
ⓐ 340 m/s
ⓑ 1500
m/s
ⓒ 500 m/s
ⓓ 240 m/s
Q15. In Transparent object light can pass _______.
ⓐ completely
ⓑ partially
ⓒ half
ⓓ these
all
Q16. Which of the
following is an artificial source of light?
ⓐ bulb
ⓑ sun
ⓒ stars
ⓓ these all
Q17. Which of the
following are luminous objects?
ⓐ firefly
ⓑ moon
ⓒ sun
ⓓ these all
Q18. Light travel ________ in one second in a vacuum.
ⓐ 300000km
ⓑ 3x105
km
ⓒ
3000000 km
ⓓ Both” a” and “b’
Q19.
Speed of sound is maximum in ____________.
ⓐ a metal wire
ⓑ air
ⓒ water
ⓓ vacuum
Q20. Which of the following is not a natural
source of light?
ⓐ sun
ⓑ stars
ⓒ moon
ⓓ Both “a” and “b
ANSWER KEY
Q1. ⓒ 2. ⓓ 3. ⓒ 4. ⓒ 5. ⓑ 6. ⓒ 7. ⓒ
8. ⓐ 9. ⓐ 10. ⓐ 11. ⓒ 12. ⓑ 13. ⓐ 14.ⓐ 15. ⓓ 16. ⓐ 17. ⓑ 18. ⓓ 19. ⓐ 20. ⓒ
