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

• A

  If both assertion and reason are true and reason is the correct explanation of assertion
• B

  If both assertion and reason are true but reason is not the correct explanation of assertion
• Correct answer
  C

  If assertion is true but reason is false
• D

  If both assertion and reason are false.

Solution

When glass surface is made rough then the light falling on it is
scattered in different direction due to which its transparency decreases.

Hence, the correct answer is option: 'C'.