PHYSICS MULTIPLE CHOICE QUESTIONS SET 13

PHYSICS 

MULTIPLE CHOICE QUESTIONS SET 13

1. Chadwick discovered
A. atom                      
B. proton                        
C. electron                       
D. neutron
Answer: Option  d
 
2. Electrons were discovered by
A. Newton                   
B. Chadwick                          
C. Roentgen              
D. J.J.Thomson
Answer: Option  d
 
3. Super Nova is
A. a black hole                     
B. a comet                  
C. a dying star             
D. an asteroid
Answer: Option  c
 
4. Unit of electric current is
A. ampere                         
B. volt                         
C. coulomb                     
D. ohm
Answer: Option  b
 
5. The unit of work and energy is
A. joule                    
B. newton                         
C. coulomb                       
D. dioptre
Answer: Option  a
 
6. Radar is used to detect
A. flying objects                 
B. artilleries               
C. military tanks          
D. none of these
Answer: Option  b
 
7. Kepler’s first law of planetary motion is also called
A. law of periods              
B. law of areas               
C. law of orbits           
D. law of distances
Answer: Option  c
 
8. A light is falling freely after the suspension wire breaks. The weight of a person inside the lift would becomes
A. doubled                 
B. unchanged                          
C. zero                        
D. halved
Answer: Option  c 
9. The electromagnetic waves are of
A. purely electrical in nature                         
B. purely magnetic in nature
C. longitudinal in nature                                
D. transverse in nature
Answer: Option  d
 
10. The force between a satellite and the earth which acts as a centripetal force keeping the satellite in orbit is
A. molecular force           
B. cohesive force                 
C. adhesive force         
D. gravitational force
Answer: Option  d