Monochromatic light entering from one medium to another, its wave… - Vidyadip

Question

Monochromatic light entering from one medium to another, its wavelength changes but the frequency does not change, explain.

✓

Answer

When monochromatic light enters from one medium to another then the velocity $v$ of light changes. Since the source producing the wave remains the same, its frequency $v$ does not change. Therefore, the wavelength $\lambda$ changes on the basis of the formula $\lambda= v / v$.

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 "2 Marks Questions" from Wave Optics→Wave Optics — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

Represent the Electric field and Magnetic field seen in the Electro magnetic waves $(EM$ waves$)$ in the form of equation.

An electron gun emits $2.0 \times 10^{16}$ electrons per second. What electric current does this correspond to?

(a) Calculate the potential at a point $P$ due to a charge of $4 \times 10^{-7} C$ located $9 cm$ away.
(b) Hence obtain the work done in bringing a charge of $2 \times 10^{-9} C$ from infinity to the point P. Does the answer depend on the path along which the charge is brought?

The electric force experienced by a charge of $1.0 \times 10^{-6}\ C$ is $1.5 \times 10^{-3}\ N.$ Find the magnitude of the electric field at the position of the charge.

Derive Einstein's Photoelectric equation.

An optical fibre $(\mu=1.72)$ is surrounded by a glass coating $(\mu=1.50).$ Find the critical angle for total internal/ reflection at the fibre-glass interface.

A bullet travelling with a velocity of 16m/s penetrates a tree trunk and comes to rest in 0.4m. Find the time taken during the retardation.

The selling rate of a radioactive isotope is decided by its activity. What will be the second$-$hand rate of a one month old $\text{ }^{32}\text{P}\big(\text{t}_{\frac{1}{2}}=14.3\text{days}\big)$ source if it was originally purchased for $800$ rupees?

The magnetic force on a charged particle is always perpendicular to its velocity. Can the magnetic force change the velocity of the particle? Speed of the particle?

Explain hard ferromagnetic and soft ferromagnetic materials.