Ultraviolet radiation are used in __:
1. Simulate the human body to produce Vitamin-D
2. Distinguish between fake and real diamonds
3. detect any alteration in the bank cheques
4. detect forged currency notes
5. relieve pain from swollen joints
Select the correct option from the codes given below:

Answer: [C] Only 1, 2, 3 & 4

Controlled exposure of ultraviolet radiations stimulates the body to produce vitamin D. Vitamin D is then used by body for strengthening bones and teeth. Infra-red waves are used by doctors to relieve pain from swollen joints.

This question is a part of GKToday's Integrated IAS General Studies Module