Compare the speeds of light of wavelength 4000 Å (i.e. violet light) and 8000 Å (i.e. red light) in vacuum.

One Line Answer

Speed of light depends on medium not on wavelength hence speed will be same for both.

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Chapter 4 Refraction of Light at Plane Surfaces
EXERCISE - 4 (A) | Q 10. (a) | Page 81

Select the correct alternative

The speed of light is maximum in

When light travels from a denser to a rarer medium, its speed ______.

The speed of light is maximum in ______.

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)

Higher Order Thinking Skills.

Light ray emerges from water into air. Draw a ray diagram indicating the change in its path in water.

Materials that are not able to allow light to pass through, are called ______ material.

Materials that allow light to pass through completely are known as transparent materials.

Define transparent materials.

Two medium with a refractive index of 1.31 & 1.50 is given. In which case