The Cauchy's dispersion formula is - Vidyadip

MCQ

The Cauchy's dispersion formula is

✓
$n=A+B \lambda^{-2}+C \lambda^{-4}$
B
$n=A+B \lambda^2+C \lambda^{-4}$
C
$n=A+B \lambda^{-2}+C \lambda^4$
D
$n=A+B \lambda^2+C \lambda^4$

✓

Answer

Correct option: A.

$n=A+B \lambda^{-2}+C \lambda^{-4}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from Ray Optics→Ray Optics — all question types→JEE physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

The Young's modulus of a wire of length $L$ and radius $r$ is $Y N / m$. If the length and radius are reduced to $L / 2$ and $r / 2$, then its Young's modulus will be

An ideal gas at a pressures of $1$ atmosphere and temperature of $27^{\circ} \mathrm{C}$ is compressed adiabatically until its pressure becomes $8$ times the initial pressure, then the final temperature is $(\gamma=3 / 2)$

Which of the following spectral series in hydrogen atom give spectral line of $4860 \mathring A$

A voltmeter has a range $0-V$ with a series resistance $R$. With a series resistance $2R$, the range is $0-V'$. The correct relation between $V$ and $V'$ is

Efficiency of Carnot engine is $100 \%$ if

An object accelerates from rest to a velocity $27.5 m / s$ in $10 sec$ then find distance covered by object in next $10 sec$

Diode is used as a/an

The angle of minimum deviation measured with a prism is $30^{\circ}$ and the angle of prism is $60^{\circ}$. The refractive index of prism material is

The spectral series of the hydrogen spectrum that lies in the ultraviolet region is the

The resistance of a galvanometer is $50 \mathrm{ohms}$ and the current required to give full scale deflection is $100 \mu \mathrm{A}$. In order to convert it into an ammeter, reading upto $10 A$, it is necessary to put a resistance of