Question:
The correct match between the entries in column I and column II are :
I II Radiation Wavelength (a) Microwave (i) 100 m (b) Gamma rays (ii) \(10^{-15}\) m (c) A.M. radio waves (iii) \(10^{-10}\) m (d) X-rays (iv) \(10^{-3}\) m
The correct match between the entries in column I and column II are :
| I | II |
| Radiation | Wavelength |
| (a) Microwave | (i) 100 m |
| (b) Gamma rays | (ii) \(10^{-15}\) m |
| (c) A.M. radio waves | (iii) \(10^{-10}\) m |
| (d) X-rays | (iv) \(10^{-3}\) m |
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Recall typical wavelengths: gamma rays are the shortest (about 10^-15 m), X-rays about 10^-10 m, microwaves about millimetres, A.M. radio waves about hundreds of metres.
Updated On: Nov 5, 2026
- (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
- (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
- (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
- (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
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The Correct Option is B
Solution and Explanation
Typical wavelength ranges of the electromagnetic spectrum:
(a) Microwave: about \(10^{-3}\) m (millimetre range), so (a)-(iv)
(b) Gamma rays: about \(10^{-15}\) m (shortest, nuclear dimensions), so (b)-(ii)
(c) A.M. radio waves: medium waves with \(\lambda\) of hundreds of metres, about 100 m, so (c)-(i)
(d) X-rays: about \(10^{-10}\) m (atomic dimensions), so (d)-(iii)
So the correct match is (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii).
Answer: (2) (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
(a) Microwave: about \(10^{-3}\) m (millimetre range), so (a)-(iv)
(b) Gamma rays: about \(10^{-15}\) m (shortest, nuclear dimensions), so (b)-(ii)
(c) A.M. radio waves: medium waves with \(\lambda\) of hundreds of metres, about 100 m, so (c)-(i)
(d) X-rays: about \(10^{-10}\) m (atomic dimensions), so (d)-(iii)
So the correct match is (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii).
Answer: (2) (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
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