Question:
The velocity of light \(\underline{\hspace{3cm}}\) when it goes to rare medium to denser.
The velocity of light \(\underline{\hspace{3cm}}\) when it goes to rare medium to denser.
Show Hint
The speed of light decreases when it enters a denser medium due to the higher refractive index.
Updated On: Nov 29, 2025
- Increases
- Decreases
- Remains the same
- None of these
Hide Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
When light passes from a rarer medium (like air) to a denser medium (like water or glass), its speed decreases. This is due to the change in refractive index.
Was this answer helpful?
0
0
Top Questions on Refraction of Light
- From the figure given below, the refractive index of medium B with respect to medium A (\(_{A}\mu_{B}\)) is:
- ICSE Class X board - 2026
- Physics
- Refraction of Light
- (a) Name the electromagnetic radiation used to detect fake currency.
(b) Redraw the diagram given below and complete the path of the light ray AB through the glass prism till it emerges out of the prism. Critical angle of the glass is 42\(^\circ\).
- ICSE Class X board - 2026
- Physics
- Refraction of Light
- A monochromatic ray strikes the surface of identical prisms (A, B and C) at different angles of incidence. The diagram below shows their refracted rays. Study the path of these refracted rays and identify in which of the diagrams
(a) the angle of incidence is maximum.
(b) the angle of incidence is minimum.
(c) the angle of incidence is equal to the angle of emergence.
- ICSE Class X board - 2026
- Physics
- Refraction of Light
- A type of glass block has a refractive index of 1.8.
(a) Calculate the speed of light in this glass. (Given speed of light in air \(c = 3 \times 10^8\) ms\(^{-1}\))
(b) If the width of this block is doubled, then what will be the speed of light in the block?
- ICSE Class X board - 2026
- Physics
- Refraction of Light
- A ray of light enters a glass block from air and comes out from the opposite surface. If the angle of refraction at the first surface is not the same as the angle of incidence at the second surface, then:
(a) What is the product of the ratio \(\frac{\sin i}{\sin r}\) at the first surface and at the second surface?
(b) State whether the opposite surfaces are parallel or not parallel.
(c) How did you reach the conclusion in (b) above?
- ICSE Class X board - 2026
- Physics
- Refraction of Light
View More Questions
Questions Asked in MPBSE Class XII Board exam
- Write what is the role of separation and hierarchy in the caste system.
- MPBSE Class XII Board - 2026
- The Caste System
- Write that industrialization refers to the mechanization of production.
- MPBSE Class XII Board - 2026
- Industrialisation and Social Change
- Write the meaning of minority class.
- MPBSE Class XII Board - 2026
- Social Structure
- Describe any two positive effects of globalization.
- MPBSE Class XII Board - 2026
- Globalisation
- Write what is the role of separation and hierarchy in the caste system.
- MPBSE Class XII Board - 2026
- The Caste System
View More Questions