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NEET 2015

Exam: NEET
Year: 2015
Subject: Physics
Chapter: Electromagnetic Waves

NEET 2015 · Physics · Electromagnetic Waves

The energy of the em waves is of the order of 15keV . To which part...

The energy of the em waves is of the order of

15keV

. To which part of the spectrum does it belong?

Options

AInfra-red rays
BUltraviolet rays
C $\gamma$ -rays
DX-rays

Correct answer

D. X-rays

Step-by-step solution

Wavelength of the ray

\lambda = \dfrac{hc}{E} = \dfrac{12400}{15000}

= 0.826Å

X-ray wavelengths are in the range

0 . 5 – 2 . 5Å

, so it is an X-ray.

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