Home
Class 12
PHYSICS
When a light wave travels from air to gl...

When a light wave travels from air to glass,

A

its wavelength decreases

B

its wavelength increases

C

there is no change in wavelength

D

its frequency decreases

Text Solution

Verified by Experts

The correct Answer is:
A
Wavelength of a light ray in a medium of refractive index `mu` is `lamda.=lamda/mu` (where `lamda`= wavelength of light ray in air or vaccum).
Promotional Banner

Topper's Solved these Questions

  • SAMPLE QUESTION PAPER

    KUMAR PRAKASHAN|Exercise PART-B SECTION-A|10 Videos

  • SAMPLE QUESTION PAPER

    KUMAR PRAKASHAN|Exercise PART-B SECTION-B|8 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    KUMAR PRAKASHAN|Exercise SECTION-D (MULTIPLE CHOICE QUESTIONS (MCQs))(MCQs ASKED IN COMPETITIVE EXAMS)|142 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS

    KUMAR PRAKASHAN|Exercise Section-D : Multiple Choice Questions (MCQs) (MCQs asked in Competitive Exams)|129 Videos

Similar Questions

Explore conceptually related problems

While passing through the prism the light ray travelling from air to glass bends towards the ………..

When light ray travels from denser to rarer medium and if theta_1 is incidence and theta_2 is refraction angle, then .....

Light ray travels from air to glass and air to water, as shown in figure (i) and (ii) respectively. What is refraction angle for figure (iii) ?

(a) When monochromatic light is incident on a surface separating two media, the reflected and refracted light both have the same frequency as the incident frequency. Explain why? (b) When light travels from a rarer to a denser medium, the speed decreases. Does the reduction in speed imply a reduction in the energy carried by the light wave? (c) In the wave picture of light, intensity of light is determined by the square of the amplitude of the wave. What determines the intensity of light in the photon picture of light

Answer the following, giving reason:- (a) When light travels from a denser to a rarer medium, the speed increases. Does it mean that there is an increase in the energy carried by the waves ? (b) The Sun appears reddish at sunset and sunrise.

When light ray travels from ...... then total internal reflection is possible.

A short pulse of white light is incident from air to a glass slab at normal incidence. After travelling through the slab, the first colour to emerge is

Statement-1: When light reflects from the air-glass plate interface, the reflected wave suffers a phase change of pi . Statement-2: The centre of the interference pattern is dark

A sound wave travels from air to water. The angle of incidence is alpha_1 , and the angle of reflection is alpha_2 . If the Snell.s law is valid, then ......