MCQ- 1 ICSE Physics class 10 ch-2 Light

Class 10 - Light Quiz

1. What is the relationship between refractive index (µ) and the speed of light?

µ = V/C
µ = C/V
µ = C × V
µ = 1/V

2. Under what condition does a light ray pass undeviated on refraction?

When it passes along the normal
When it travels at high speed
When it passes through air only
When the refractive index is high

3. What happens to the wavelength of light when it enters a denser medium?

It decreases
It increases
It remains the same
It becomes zero

4. Which of the following factors affect the refractive index of a medium?

Temperature
Shape of the object
Distance of object
Color of the medium

5. What happens to the speed of light when it travels from air to glass?

It decreases
It increases
It remains the same
It becomes zero

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