You are browsing the best resource for TNPSC Group 1 Exam.

for the Aspirants who are preparing for Group 2,2A, Group 4,VAO kindly refer your Syllabus and Prepare with our site.

  for more questions Buy the Book

Heat Light and Sound


1. 

The speed of light will be minimum while passing through

Answer : A. glass

Justify your answer :  
Name:  
Email ID:  
 

2. 

"Decibal" is a unit of

Answer : A. sound intensity

Justify your answer :  
Name:  
Email ID:  
 

3. 

The unit of refractive index is

Answer : C. No unit

Justify your answer :  
Name:  
Email ID:  
 

4. 

Light year is the unit of

Answer : A. distance

Justify your answer :  
Name:  
Email ID:  
 

5. 

The unit of power of a lens is

Answer : C. diopter

Justify your answer :  
Name:  
Email ID:  
 

6. 

Doppler effect in sound produces apparent change in

Answer : B. frequency

Justify your answer :  
Name:  
Email ID:  
 

  for more questions Buy the Book
TOP