Nature of Electromagnetic Radiation

We can say that the energy of frequency $\mathrm{\nu }$ is given by $\mathrm{E}=\mathrm{h\nu }$, where $\mathrm{h}$ is Planck's constant. The momentum of a photon is $\mathrm{p}=\frac{\mathrm{h}}{\mathrm{\lambda }}$​  where $\mathrm{\lambda }$  is the wavelength of photon. Then we may conclude that velocity of light is equal to:

What is the amplitude of the electromagnetic wave in the diagram below?

The number of wavelengths per unit length is called

What is/are correct about Hertz $(\mathrm{Hz} {\mathrm{s}}^{-1})$?

The ratio of energy to the frequency of electromagnetic radiation is called:

 An object emits two different radiation, when it absorbs certain amount of energy having  $2400 \stackrel{\mathrm{o}}{\mathrm{A}}$ of wavelength in which one radiation having $6000 \stackrel{\mathrm{o}}{\mathrm{A}}.$ What is the wavelength of other radiation?

Which value is closest to the wavelength, in meters, for a quantum of light with a frequency of  $8\times {10}^{16}$ per second?

[Given: $\mathrm{c}=3 \mathrm{x} {10}^8 {\mathrm{ms}}^{-1}, \mathrm{h}=6.63 \mathrm{x} {10}^{-34} \mathrm{J}.\sec$]

Which of the following is correct?

Wavenumber for a radiation having 5800 Å
wavelength is x × 10 cm^–1 . The value of x is

_____.

A hypothetical electromagnetic wave is show below.

The frequency of the wave is x × 10¹⁹ Hz.x = ______ (nearest integer)

The candela is the luminous intensity, in a given
direction, of a source that emits monochromatic
radiation of frequency 'A' × 1012 hertz and that has
a radiant intensity in that direction of
$\frac{1}{\text{'}B\text{'}}$ watt per steradian. 'A' and 'B' are respectively

Given wavelength of wave is $15800\mathrm{\AA }$. If its wave number is $\mathrm{X}\times {10}^{-1} {\mathrm{cm}}^{-1}$. The value of $\mathrm{X}$ is (Nearest integer) 

Arrange in increasing wave length order:

Gamma rays, X-rays, UV rays, IR rays

The frequency of an electromagnetic radiation is $2\times {10}^6\mathrm{Hz}.$ What is its wavelength in metres?

(Velocity of light $= 3\times {10}^8 {\mathrm{ms}}^{-1}$)

Cotyledons are also called-

Two particles of masses 'm' and '2m' have equal kinetic energies. Their de Broglie wavelengths are in the ratio of

What is the correct sequence of following electromagnetic radiation arranged in the increasing order of energy?
$1.$ $\mathrm{X}$-rays
$2.$ Visible light
$3.$ $\mathrm{\gamma }$ -rays
Select the correct answer using the codes given below:

A radio can tune to any station in $7.5\mathrm{ }\mathrm{M}\mathrm{H}\mathrm{z}$ to $12\mathrm{ }\mathrm{M}\mathrm{H}\mathrm{z}$ band. The corresponding wavelength band is

The de Broglie relation is given by

Which of the following are not electromagnetic waves?