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Unit - 5.3 Refraction Of Light PHYSICS - Unit - 5.3 Refraction Of Light

ICSE - STD 8 - PHYSICS (ICSE - English Medium). 34 questions in this chapter.

Question types

Unit - 5.3 Refraction Of Light question types

34 questions across 5 question groups — pick any mix to generate a PHYSICS paper with step-by-step answer keys.

34
Questions
5
Question groups
5
Question types
Sample Questions

Unit - 5.3 Refraction Of Light questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
When a ray of light strikes the glass slab at 90°, it is seen that it does not deviate from its path. In such a situation :
  • A
    angle of incidence is zero
  • B
    angle of refraction is zero
  • ✓
    both (a) and (b)
  • D
    none of these

Answer: C.

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Q 2MCQ1 Mark
When a coin placed in a bowl of water and seen from above, it appears :
  • ✓
    raised from its position
  • B
    below its position
  • C
    at the same position
  • D
    none of these

Answer: A.

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Q 3MCQ1 Mark
A ray of light travelling obliquely from glass to air :
  • ✓
    bends towards the normal
  • B
    bends away from the normal
  • C
    does not deviate from its path
  • D
    none of these

Answer: A.

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Q 4MCQ1 Mark
A ray of light incident on glass slab finally emerges out of it. The ray which emerges out is called.
  • A
    incident ray
  • B
    refracted ray
  • ✓
    emergent ray
  • D
    none of these

Answer: C.

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Q 5MCQ1 Mark
A ray of light travelling in air strikes the surface of glass at angle of 45°. The angle of refraction in the glass will be :
  • ✓
    less than 45°
  • B
    more than 45°
  • C
    zero
  • D
    none of these

Answer: A.

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Q 11fill in the blanks.1 Mark
(deviates, less)
When a ray of light travels from an optically more denser medium to an optically less denser medium, the angle of incidence is always _____________ than the angle of refraction.
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Q 15fill in the blanks.1 Mark
(deviates, less)
The phenomenon due to which a ray of light _____________ from its path while travelling from one optical medium to another optical medium is called refraction.
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Q 21Match the following.5 Marks
Column AColumn B
1. The deviation of rays of light from their path on passing from one medium to another.(a) Incident ray
2. The name of ray which travels along a different path on passing through a glass slab.(b) Refraction of light
3. The name of the ray which travels toward an optical medium of a different nature.(c) Angle of refraction
4. The ratio of speed of light in vacuum to speed of light in a given optical medium.(d) Refracted ray
5. The angle which a refracted ray makes with normal.(e) Refractive index
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