PHYSICS MULTIPLE CHOICE QUESTIONS SET 145

PHYSICS 

MULTIPLE CHOICE QUESTIONS SET 145

1. The shape of our milky way galaxy is
(a) circular
(b) elliptical
(c)spiral
(d)None of the above

2. The different colours of different stars are due to the variation of
(a)temperature
(b)pressure
(c)density
(d)radiation from them

3. Wollen clothes keep the body warm because
(a)Wool increases the temperature of the body
(b)Wool is a bad conductor
(c)Wool absorbs radiant heat from outer objects
(d)Wool rejects heat from the outer objects

4. If the length of a simple pendulum is halved then its period of oscillation is
(a)doubled
(b)halved
(c)increased by a factor
(d) decreased by a factor

5. Mist is caused by
(a)dry ice
(b)ice at low temperature
(c)water vapour at low temperature
(d) carbon monoxide in solid form

6. While catching a ball a player pulls down his hands to lower the
(a) force
(b) momentum
(c) Impulse 
(d) catching time

7. When a barometer reading suddenly recedes it indicates that climate
(a)will be very warm
(b)will be extremely stormy
(c)will remain cold
(d) incessant rain for at least 48 hours

8. A particle dropped from the top of a tower uniformly falls on ground at a distance which is equal to the height of tower. Which of the following paths will be traversed by the particle ?
(a) Circle
(b) Parabolic
(c) Great circle
(d) Hyper parabolic

9. Electron microscope was invented by
(a)Knoll and Ruska
(b)Robert Koch
(c)Leeuwenhoek
(d) C.P. Swanson

10. When a bottle of scent is kept open in a comer of a room its odour is felt in all parts of the room. This is due to the phenomenon of:
(a) evaporation
(b) vaporization
(c) diffusion
(d) sublimation
 

ANSWER: 

1 c 

2 a 

3 b 

4 d 

5 c 

6 b 

7 b 

8 b 

9 a 

10 c