Find the wavelength of radiation having frequ | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Given: Frequency $(
u) = 4 	imes 10^{11} \ kHz = 4 	imes 10^{14} \ Hz$ (or $s^{-1}$).Speed of light $(c) = 3 	imes 10^8 \ m \ s^{-1}$.We know

Vedclass · Accepted Answer

$7.5 	imes 10^{-7} \ m$

Vedclass · Answer

(B) Given: Frequency $(
u) = 4 	imes 10^{11} \ kHz = 4 	imes 10^{14} \ Hz$ (or $s^{-1}$).Speed of light $(c) = 3 	imes 10^8 \ m \ s^{-1}$.We know the relation: $
u = \frac{c}{\lambda}$.Therefore,wavelength $(\lambda) = \frac{c}{
u}$.$\lambda = \frac{3 	imes 10^8 \ m \ s^{-1}}{4 	imes 10^{14} \ s^{-1}}$.$\lambda = 0.75 	imes 10^{-6} \ m = 7.5 	imes 10^{-7} \ m$.

Find the wavelength of radiation having frequency $4 \times 10^{11} \ kHz$.

Similar Questions

The kinetic energy of photoelectrons depends on ...............

In the photoelectric effect,the photocurrent:

According to the electromagnetic theory of Maxwell,what happens when charged particles are accelerated?

Wavelengths of different radiations are given below:
$\lambda(A) = 300 \ nm$
$\lambda(B) = 300 \ \mu m$
$\lambda(C) = 3 \ nm$
$\lambda(D) = 30 \ \mathring{A}$
Arrange these radiations in the increasing order of their energies.

What is light?

Vedclass Test Series

Exam Paper Generator

Online Exam Module