PHYSICS MULTIPLE CHOICE QUESTIONS SET 141

PHYSICS

MULTIPLE CHOICE QUESTIONS SET 141

1. For which Diode is used ?
(a)modulation
(b)oscillation
(c)amplification
(d)purification

2. Who among the following developed the technology of underground nuclear explosion ?
(a)Dr. Horn J. Bhabha
(b)Dr. Vikram Sarabhai
(c)Dr. Raja Ramanna
(d)Dr. P. K. Iyengar

3. Which among the following types of coal produces most heat per unit?
(a) Coal
(b) Lignite
(c) Anthracite
(d) Pit

4. Which among the following waves is used for communication by artificial satellites ?
(a)Microwaves
(b)Radio waves
(c)A. M.
(d)Frequency of 101 series

5. What is found in frequency modulation?
(a)Fixed frequency
(b)Fixed dimension
(c)Change In frequency and dimension
(d)Change in dimension only

6. When the speed of car is doubled then what will be the braking force of the car to stop it in the same distance ?
(a) four times
(b) two times
(c) half
(d) one fourth

7. The dimension of which of the following is the same as that of impulse?
(a)Volume
(b)Momentum
(c)Torque
(d)Change in the rate of momentum

8. Which among the following is the fundamental quantity ?
(a) Volume
(b) Time
(c) Velocity
(d) Force

9. If the diameter of a capillary is doubled then the rise of water in it will be
(a) two times
(b)half
(c) four times
(d) no change

10. Why the needle of iron swims on Water surface when it is kept gently ?
(a)It will remain under the water when it will displace more water than its weight
(b)the density of needle is less than that of water
(c)due to surface tension
(d)due to its shape 

ANSWERS :  
1 d 
2 a 
3 c 
4 a 
5 a 
6 a 
7 b 
8 b 
9 b 
10 c