PHYSICS MULTIPLE CHOICE QUESTIONS SET 19

PHYSICS  

MULTIPLE CHOICE QUESTIONS SET 20

1. Liquid metal is
A. zinc              
B. lead                     
C. saline                   
D. mercury
Answer: Option  d
 
2. When fast moving electrons are stopped suddenly by a metal target
A. beta rays are produced                     
B. gamma rays are produced
C. x–rays are produced                   
D. alpha rays are produced
Answer: Option  c
 
3. For galvanizing iron,which one of the following is used?
A. copper                   
B. lead                  
C. zinc                     
D. tin
Answer: Option  c
 
4. The Bowman’s capsule function as a
A. carrier                 
B. barrier              
C. secretor                   
D. filter
Answer: Option  d
 
5. Which one of the following is a physical change?
A. rusting of iron               
B. boiling of water             
C. burning of an egg         
D. boiling of candle
Answer: Option  b
 
6. Which substance is used to make rubber strong?
A. sponge              
B. iron                
C. sulphur                       
D. chlorine
Answer: Option  c
 
7. If sound persists even after its source has stoped producing sound,then its called
A. free vibration                
B. resonance              
C. reverberation             
D. forced vibration
Answer: Option  c
 
8. When the speed of the body is doubled,its kinetic energy becomes
A. half                     
B. doubled                  
C. one–fourth              
D. quadruple
Answer: Option  d
 
9. When a body moves with uniform velocity its acceleration is
A. maximum            
B. doubled                    
C. zero                    
D. tripled
Answer: Option  c
 
10. On adding a little antimony to germanium,we get
A. n–type semiconductor                            
B. p–type semiconductor          
C. metallic conductor                                  
D. intrinsic conductor
Answer: Option  a