A ray of light falls normally on a glass slab. What is the angle of emergence ?
A) 0°
B) 90°
C) 45°
D) 180°
1 Answers
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The light ray that falls perpendicular to one side of the glass slab surface comes out……………………..
B) without any deviation
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When a glass slab is introduced in the path of a light ray the number of times the light ray undergoes refraction are ……………….
Correct option is A) 2 times
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Raju is doing an experiment with the glass slab. He focussed the light towards the glass slab at an angle 30°.
Correct option is A) 30°
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A ray of light falls obliquely on a glass slab. What is the angle of emergence ?
C) Equal to incident angle
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When a ray of light travels through glass slab. Which of the following is not true when it is incidentobliquely ?
D) Incident ray and emergent ray are not along the same straight line.
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Ramu placed a rectangular glass slab over printed letters. The letters appears while ………………. viewing through a glass slab.
B) nearer as its original position
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If the thickness’ of the glass slab increases then the refractive index of the glass slab …………………
C) remains same
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The relation among angle of incidence (i1) angle of emergence (i1) angle of deviation (d) and angle of prism (A)
C) A + d = i1 + i2
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What is the angle of deviation of reflected ray if ray of light is incident on a plane mirror at an incident angle θ?
When a ray of light is incident on a plane mirror at an angle θ, the reflected ray gets deviated by an angle of (π – 2θ).
2 Answers 1 views
When ray of light falls normally on a mirror, its angle of incidence is 90°. True or false? Justify your answer.
False, when light falls normally on a mirror, its angle of incidence is zero degree.
2 Answers 2 views