MCQ- 9 ICSE Physics class 10 ch-2 Light

Class 10 - Light Quiz (Total Internal Reflection in Prisms)

1. What is the primary purpose of a 45°-90°-45° prism in Total Internal Reflection?

To reflect light without deviation
To deviate light by 90° or 180°
To refract light
To disperse light

2. What happens when light strikes a 60°-60°-60° equilateral prism at a certain angle?

Light passes undeviated
Light gets absorbed
Total internal reflection occurs
Light gets refracted partially

3. In a 30°-60°-90° prism, what is the angle of deviation when total internal reflection occurs?

30°
45°
90°
60°

4. Why is a Total Internal Reflecting Prism used instead of a Plane Mirror?

To avoid light loss due to absorption
To increase reflection efficiency
To reduce light intensity
To bend light by 45°

5. Which prism is commonly used to erect an inverted image without deviation?

45°-90°-45° prism
30°-60°-90° prism
60°-60°-60° prism
Glass slab

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