Electromagnetic Waves Ques 25
25. 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: 25.(c)
Solution:
- (c) Rays $\quad $ Wavelength [Range in $m$ ]
$X$-rays $\quad 1 \times 10^{-11}$ to $3 \times 10^{-8}$
$\gamma$-rays $\quad 6 \times 10^{-14}$ to $1 \times 10^{-11}$
Microwaves $\quad 10^{-3}$ to $0.3$
Radiowaves $\quad 10$ to $10^{4}$
Wavelength of $U.V.$ Rays ranges from $6 \times 10^{-8}$ to $4 \times 10^{-7}$.
BETA
