| List-I | List-II | ||
| (A) | UV rays | (I) | Diagnostic tool is medicine | 
| (B) | X-rays | (II) | Water purification | 
| (C) | Microwave | (III) | Communication, Radar | 
| (D) | Infrared wave | (IV) | Improving visibility on foggy days | 
| 1. | A-III, B-II, C-I, D-IV | 
| 2. | A-II, B-I, C-III, D-IV | 
| 3. | A-II, B-IV, C-IIII, D-I | 
| 4. | A-III, B-I, C-II, D-IV | 
Which colour of the light has the longest wavelength?
| 1. | violet | 2. | red | 
| 3. | blue | 4. | green | 
| 1. | \(\mathrm{X}\)-rays | 2. | Gamma rays | 
| 3. | Ultraviolet rays | 4. | Microwaves | 
| 1. | \(\lambda_\gamma<\lambda_X<\lambda_I<\lambda_M\) | 
| 2. | \(\lambda_M<\lambda_I<\lambda_X<\lambda_\gamma\) | 
| 3. | \(\lambda_X<\lambda_\gamma<\lambda_M<\lambda_I\) | 
| 4. | \(\lambda_X<\lambda_I<\lambda_\gamma<\lambda_M\) | 
| List - I (Electromagnetic waves)  | 
			List - II (Wavelength)  | 
		||
| (a) | AM radio waves | (i) | \(10^{-10}~\text{m}\) | 
| (b) | Microwaves | (ii) | \(10^{2} ~\text{m}\) | 
| (c) | Infrared radiation | (iii) | \(10^{-2} ~\text{m}\) | 
| (d) | \(X\)-rays | (iv) | \(10^{-4} ~\text{m}\) | 
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iii) | (iv) | (i) | 
| 2. | (iv) | (iii) | (ii) | (i) | 
| 3. | (iii) | (ii) | (i) | (iv) | 
| 4. | (iii) | (iv) | (ii) | (i) | 
The orange colour of a carrot is due to the presence of the \(\beta\)-carotene molecule. This means that the \(\beta\)-carotene molecule absorbs light at wavelengths that are:
1. longer than \(550~\text{nm}\)
2. shorter than \(550~\text{nm}\)
3. longer than \(700~\text{nm}\)
4. shorter than \(700~\text{nm}\)