Questions - Answers

1. What is physics?
A: Physics is a branch of science which deals with study of basic laws of nature.
 

2. What is the discovery of C.V. Raman?
A: C.V. Raman discovered the inelastic scattering of light by molecules.
 

3. What are fundamental forces in nature?
A: 1) Gravitational force    2) Electromagnetic
    3) Strong nuclear            4) Weak nuclear forces.
 

4. Which of the following has symmetry?
   (i) Gravitational forcen   (ii) Law of gravitation

A: Law of gravitation has symmetry in nature. Because law of gravitation is same very where.
 

5. What is the contribution of S. Chandra Sekhar to Physics?
A: S. Chandra Sekhar discovered the structure and evolution of stars (black hole). The maximum mass that a white dwarf can have 1.4 times solarmass. This is known as "Chandra Sekhar Limit".