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Electromagnetic radiation MCQ - Practice Questions with Answers

Edited By admin | Updated on Sep 25, 2023 25:23 PM | #NEET

Quick Facts

8 Questions around this concept.

Solve by difficulty

Ratio of frequency of two radiations having wavelength 4000 and 6000 A^o respectively

A

2:3

B

3:2

C

1:1

D

1:2

Concepts Covered - 1

Speed of electromagnetic radiation and EM radiation

EM radiation -

According to electromagnetic wave theory, energy is emitted continuously from a source in the form of radiations (or waves), known as electromagnetic radiation.

The relation between frequency, wavelength, and wavenumber:

Frequency ∝ 1/wavelength wavenumber ∝ 1/wavelength

Radio wave - $\mathrm{3\times 10^{14}\ to\ 3 \times 10^{7} A^o}$

Microwave - $\mathrm{3\times 10^{9}\ to\ 3 \times 10^{6} A^o}$

Infrared - $\mathrm{6\times 6^{6}\ to\ 7600 \ A^o}$

Ultraviolet - $\mathrm{3800\ to\ 150\ A^o}$

X-rays - $\mathrm{150\ to\ 0.1\ A^o}$

Gamma rays - $\mathrm{0.1\ to\ 0.01 \ A^o}$

Speed of electromagnetic radiation -

$c= \nu \lambda$

where the frequency is ( $\nu$ , pronounced as nu), the wavelength is (λ) and velocity of light is (c)

Study it with Videos

Speed of electromagnetic radiation and EM radiation

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Speed of electromagnetic radiation and EM radiation

Chemistry Part I Textbook for Class XI

Page No. : 37

Line : 20

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