Subject :Sam Class : Sample
Read the given statements and select the correct option.
Statement 1 : A concave mirror and a convex lens both have the same focal length in air. When they are submerged in water, they will still have the same focal length.
Statement 2 : The refractive index of water is greater than the refractive index of air.
ABoth statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true but statement 2 is false.
DStatement 1 is false but statement 2 is true.
When the concave mirror is placed in water, there is a distortion in the light rays passing through it. Hence focal length increases in a concave mirror
Ans 1:
Class : Class 8
Ans 2:
Class : Class 10
Ans 3:
Class : Class 10
THe focal length of mirror is always a constant