Question
Physics Question on Ray optics and optical instruments
By roughening the surface of a glass sheet its transparency can be reduced. Glass sheet with rough surface absorbs more light.
A
Both assertion and reason are true and reason is the correct explanation of assertion
B
Both assertion and reason are true but reason is not the correct explanation of assertion
C
Assertion is true but reason is false
D
Both assertion and reason are false
Answer
Assertion is true but reason is false
Explanation
Solution
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.