PHYSICS MULTIPLE CHOICE QUESTIONS SET 12

PHYSICS 

MULTIPLE CHOICE QUESTIONS SET 12

1. The material which do not conduct electric charges is
A. copper                 
B. mica                  
C. silver          
D. graphite
Answer: Option  b
 
2. The instrument used to test the purify of milk is
A. galvanometer              
B. lactometer             
C. polarimeter              
D. calorimeter
Answer: Option  b
 
3. A pyrometer is used to measure
A. low temperature             
B. low pressure                 
C. high pressure        
D. high temperature
Answer: Option  d
 
4. Wave theory was proposed by
A. Huygens            
B. Raman                  
C. Young            
D. Newton
Answer: Option  a
 
5. A prism which acts as polariser and anlayser is
A. glass prism              
B. nickel prism             
C. rocksalt prism            
D. liquid prism
Answer: Option  b
 
6. The density of pure water will be
A. maximum at 4°                 
B. minimum at 4°          
C. maximum at 0°   
D. minimum at 0°
Answer: Option  a
 
7. Sound waves in air are
A. transverse waves                 
B. longitudinal waves                   
C. both     
D. none of these
Answer: Option  b
 
8. Speed of bodies exceeding the speed of sound are called as
A. supersonic                
B. ultrasonic               
C. infrasonic                      
D. superfast
Answer: Option  a
 
9.  A radar which detects the presence of the enemy aircraft uses
A. sound waves                  
B. radio waves                 
C. electric waves                  
D. ultrasonic waves
Answer: Option  b
 
10.  The S.I. unit of time is
A. hour                           
B. day                     
C. second                      
D. minute
Answer: Option  c