PHYSICS MULTIPLE CHOICE QUESTIONS SET 04

PHYSICS MULTIPLE CHOICE QUESTIONS SET 04 

1. Chemical energy is converted into electrical energy in
A. dynamo                  

B. motor                   

C. battery                     

D. electric bulb
Answer: Option  c
 

2. Gas law was given by
A. Boyle                      

B. Ostwald                          

C. Arrhenius                

D. Faraday
Answer: Option  a
 

3. Which metal is commonly is used for making an electromagnet?
A. copper              

B. iron                       

C. nickel                 

D. cobalt
Answer: Option  b
 

4. Sound travels at maximum speed in
A. vacuum                  

B. air                         

C. water                           

D. steel
Answer: Option  d
 

5. In a dynamo mechanical energy is converted into
A. heat energy          

B. sound energy           

C. chemical energy          

D. electrical energy
Answer: Option  d
 

6. The splitting of a beam of white light into its different colours is known as
A. refraction               

B. reflection                   

C. dispersion                

D. none of these
Answer: Option  c
 

7. Which one of the following electronic devices is used for digital displays in electronic calculators?
A. LEDs                  

B. zener diodes                 

C. zener diodes                      

D. none of these
Answer: Option  a
 

8. Alternating current is converted into direct current by
A. dynamo                       

B. transformer                     

C. rectifier                             

D. motor
Answer: Option  c
 

9. A lens used to rectify long sight is
A. concave lens                   

B. convex lens                 

C. plano concave lens           

D. plano convex lens
Answer: Option  b
 

10.  Heat energy is converted into kinetic energy in a
A. dynamo                      

B. bulb                         

C. microphone                     

D. steam engine
Answer: Option  d