Assertion : A double convex lens (μ = 1.5) has focal length 10 cm. When the lens is immersed in water (μ = 4/3), its focal length becomes 77 cm. Reason : 1/f = (μv − μm/μm)(1/R1−1/R2) Assertion : A double convex lens (μ = 1.5) has focal length 10 cm. When the lens is [...]