Home
Class 12
PHYSICS
Assertion: By roughening the surface of ...

Assertion: By roughening the surface of a glass sheet its transparency can be reduced.
Reason: Glass sheet with rough surface absorbs more light.

A

(a) If both the assertion and reason are true and reason explains the assertion assertion.

B

(b) If both assertion and reason are true but reason does not explain the assertion

C

(c) If assertion is true but reason is false.

D

(d) If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
C

When glass surface is made rough then the light falling on it is scattered in different directions reducing its transparency. Also since rough surfaces scatter light more, it is absorbed less.
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    A2Z|Exercise Section D - Chapter End Test|29 Videos
  • WAVE OPTICS

    A2Z|Exercise AIIMS Questions|25 Videos
  • SOURCE AND EFFECT OF MAGNETIC FIELD

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

Assertion : A ray of light entering from glass to air suffers change in frequency. Reason : Velocity of light in glass is more than that ni air.

Assertion : The colour of the green flower seen through red glass appears to be dark. Reason : Red glass transmits only red light.

Assertion : If the light from an ordinary source passes through a polaroid sheet, its intensity is reduced by half. Reason : The electric vectors associated with the light wave along the direction of the aligned molecules get absorbed by polaroid.

A match stick can be lighted by rubbing it against a rough surface. Why ?

A ray of light incident on the horizontal surface of a glass slab at an angle of incidence ‘i’just grazes the adjacent vertical surface after reflection. Compute the critical angle and refractive index of glass

Light is incident on a plane glass sheet at an angle of 70^@ . Find the refractive index of glass sheet if the reflected and refracted rays are perpendicular to each other.

When the angle of incidence is 60^(@) on the surface of a glass slab, it is found that the reflected ray is completely polarised. The velocity of light in glass is

Assertion: Surface of asymmetrical conductor can be treated as equipotential surface. Reason: Charges can easily flow in a conductor.