Question

Match the following electromagnetic waves with their correct energy order.  

Column I		Column II
(A)	\(\text{Gamma rays}\)	(I)	\(\text{Lowest frequency}\)
(B)	\(\text{X-rays}\)	(II)	\(\text{Highest energy}\)
(C)	\(\text{Microwaves}\)	(III)	\(\text{Used in radar communication}\)
(D)	\(\text{Radio waves}\)	(IV)	\(\text{Used in medical imaging}\)

Choose the correct answer from the options given below:

• A. A-II, B-IV, C-III, D-I
• B. A-IV, B-II, C-I, D-III
• C. A-II, B-I, C-IV, D-III
• D. A-III, B-IV, C-II, D-I

Hint:

Remember: \[ E=hf \] Higher frequency means higher energy.

Answer 1

The Correct Option is A

Step 1: Recall electromagnetic spectrum order. Energy order: \[ \text{Gamma rays} > \text{X-rays} > \text{UV} > \text{Visible} > \text{IR} > \text{Microwaves} > \text{Radio waves} \]

Step 2: Match each wave. \[ \text{Gamma rays} \rightarrow \text{Highest energy} \] \[ \text{X-rays} \rightarrow \text{Medical imaging} \] \[ \text{Microwaves} \rightarrow \text{Radar communication} \] \[ \text{Radio waves} \rightarrow \text{Lowest frequency} \] Therefore: \[ \boxed{A-II,\ B-IV,\ C-III,\ D-I} \]