Advertisements
Advertisements
Question
Higher Order Thinking Skill.
What do you conclude about the speed of light in diamond. if the refractive index of diamond is 2.41?
Advertisements
Solution
µ = 2.41; Ca = 3 × 108ms [Velocity of light]
µ = `"Speed of light in air"/"Speed of light in diamond "=" C"_"a"/"C"_d"`
Cd =`"C"_"a"/"µ"= (3 xx 10^8)/2.41 `= 1. 245 × 108 m/s
∴ Speed of light decreases when the light ray travels from air to diamond.
APPEARS IN
RELATED QUESTIONS
Write true or false of the following statement.
The speed of light in vacuum is 3 × 108 ms-1.
A light ray passes from water to
- air, and
- glass.
In each case, state how does the speed of light change.
When light travels from a denser to a rarer medium, its speed ______.
An obliquely incident light ray bends at the surface due to a change in speed when passing from one medium to another. The ray does not bend when it is incident normally. Will the ray have a different speed in the other medium?
What is the speed of light in vacuum?
Materials that allow light to pass through completely are known as ______ material.
Objects that allow light to pass through partially are called ______ material.
The speed of light decreases in a denser medium, light bends towards the normal.
Light is one of the slowest traveling energy with a speed of 3 × 10-8ms-1
Two medium with a refractive index of 1.31 & 1.50 is given. In which case
- The bending of light is more and
- speed of light is more.
