The frequency of light for which the wavelength is
is
.
Further explanation:
The frequency is a measure of number of wave’s that passes through a fixed point or place in a given time interval. The S.I unit of frequency is Hertz
.
Wavelength is defined as the distance between two successive crests or troughs of a travelling wave.
Examples of waves are sound wave, light wave, mechanical waves, surface waves etc.
Given:
The wavelength of the light used is
.
The speed of the light is
.
Concept:
Light is an electromagnetic wave which carries energy in the form of electric field and magnetic field. The speed of light in vacuum is
.
The speed of light can be expressed in terms of wavelength of the light and the frequency of the light.
The speed of light is:

Rearrange the above expression.
…… (1)
Here,
is the frequency of the light,
is the speed of the light in vacuum and
is the wavelength of the light.
Substitute
for
and
for
in equation (1).

Thus, the frequency of light for which the wavelength is
is
.
Learn More:
1. What is the threshold frequency ν0 of cesium? Note that 1 ev (electron volt)=1.60×10−19 j. brainly.com/question/6953278
2. Calculate the wavelength of an electron (m = 9.11 × 10-28 g) moving at 3.66 × 106 m/s brainly.com/question/1979815
3. What is the frequency of light for which the wavelength is 7.1 × 102 nm brainly.com/question/9559140
Answer Details:
Grade: High School
Subject: Physics
Chapter: Electromagnetic Waves
Keywords:
Frequency, light, wavelength, 420 nm, 4.20x10^-7 m, 7.14x10^14 Hz, vacuum, air, crests, troughs, sound wave, light wave, mechanical wave.