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प्रश्न
Higher Order Thinking Skill.
What do you conclude about the speed of light in diamond. if the refractive index of diamond is 2.41?
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उत्तर
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.
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संबंधित प्रश्न
Write true or false of the following statement.
The speed of light in vacuum is 3 × 108 ms-1.
State the speed of light in (a) air, (b) glass.
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?
Numerical problem.
Light enters from air into a glass plate having refractive index 1.5. What is the speed of light in glass? (Ans: 2 × 108 ms–1)
Objects that allow light to pass through partially are called ______ material.
Define transparent materials.
The speed of light decreases in a denser medium, light bends towards the normal.
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.
Light travels a distance of '10x' units in time 't1' in vacuum and it travels a distance of 'x' units in time 't2' in a denser medium. Using this information answer the question that follows:
'Light covers a distance of '20x' units in time 't1' in diamond'. State true or false.
