Assertion : A convex lens of glass `(mu = 1.5)` behave as a diverging lens when immersed in carbon disulphinde of higher refractive index `(mu = 1.65)`. Reason : A diverging lens is thinner in the middle and thicker at the edges.A. If both assertion and reason are true and reason is the correct explanation of assertion.B. If both assertion and reason are true and reason is not the correct explanation of assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false.

Assertion : A convex lens of glass `(mu = 1.5)` behave as a diverging

1.	Assertion : A convex lens of glass `(mu = 1.5)` behave as a diverging lens when immersed in carbon disulphinde of higher refractive index `(mu = 1.65)`. Reason : A diverging lens is thinner in the middle and thicker at the edges.A. If both assertion and reason are true and reason is the correct explanation of assertion.B. If both assertion and reason are true and reason is not the correct explanation of assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false.
Answer» Correct Answer - B `mu = (mu_(g))/(mu_(c)) = (1.5)/(1.65) lt 1` As `1/f = (mu- 1) (1/(R_(1)) - 1/(R_(2)))` `:. f` becomes negative. Therefore, the lens behaves as a diverging lens.

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