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PHYSICS MCQ

Unit - 5.3 Refraction Of Light · ICSE STD 8 (ICSE - English Medium). 5 questions.

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5 questions · timed · auto-graded

MCQ 11 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
Correct option: C.
both (a) and (b)
C
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MCQ 21 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
Correct option: A.
raised from its position
A
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MCQ 31 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
Correct option: A.
bends towards the normal
A
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MCQ 41 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
Correct option: C.
emergent ray
C
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MCQ 51 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
Correct option: A.
less than 45°
A
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