A convex Lens of focal Length "0.15m" is made of refractive "(3)/(2)" .When it is placed in liquid,its focal Length increases by "0.225m" . Find the refractive index of the liquid.

A double convex lens has a focal length of 25 cm in air. When it is dipped into a liquid of refractive index 4/3. its focal length is increased to 100 cm. Find the refractive index of the lens material.

A double convex lens of focal length 30cm is made of glass.When it is immersed in a liquid of refractive index 1.4 the focal length is found to be 126cm. the critical angle between glass and the liquid is

A double convex lens of focal length 30cm is made of glass.When it is immersed in a liquid of refractive index 1.4 the focal length is found to be 126cm .the critical angle between glass and the liquid is

A glass convex lens has a power of + 10 D . When this lens is totally immersed in a liquid, it acts as a concave lens of focal length 50 cm . Calculate the refractive index of the liquid. Given .^a mu_g = 1.5 .

A double convex lens of focal length 20 cm is made of glass of refractive index 3 / 2. When placed completely in water (._(a)mu_(w)=4//3) , its focal length will be

A bi-convex lens made of glass (refractive index 1.5) is put in a liquid of refractive index 1.7. Its focal length will

A convex lens of focal length 0.24 m and of refractive index 1.5 is completely immersed in water of refractive index 1.33. Find the change in focal length of the lens.