Electromagnetic Waves - Result Question 31
31. Which one of the following electromagnetic radiations has the smallest wavelength? [1994]
(a) ultraviolet waves
(b) X-rays
(c) $\gamma$-rays
(d) microwaves
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Answer:
Correct Answer: 31. (c)
Solution:
- (c) Rays Wavelength
[Range in $m$ ]
$X$-rays $1 \times 10^{-11}$ to $3 \times 10^{-8}$
$\gamma$-rays $6 \times 10^{-14}$ to $1 \times 10^{-11}$
Microwaves $10^{-3}$ to 0.3
Radiowaves 10 to $10^{4}$
Wavelength of U.V. Rays ranges from
$6 \times 10^{-8}$ to $4 \times 10^{-7}$.
