An air bubble in a glass sphere `(mu = 1.5)` of radius 2 cm is 1 cm deep when viewed from one face across a diameter. Find the position of the air bubble.

A small air bubble exists inside a transparent cube of side 15 cm each. The apparent of the bubble observed from one face is 6 cm and from the opposite face its apparent distance becomes 4 cm. Determine the real distance of the bubble from the first face and refractive index of the material of the cube.

A transparent cube of 0.21m edge contains a small air bubble. Its apparent distances when viewed through one face of the cube is 0.1 m and when viewed from the opposite face is 0.04 m. The actual distance of the bubble from the second face of the cube is

There is a small air bubble at the centre of a solid glass sphere of radius r and refractive index mu . What will be the apparent distance of the bubble from the centre of the sphere, when viewed from outside?

There is a small air bubble at the centre of a solid glass sphere of radius r and refractive index mu . What will be the apparent distance of the bubble from the centre of the sphere, when viewed from outside?

If three smaller sphrer are made by melting a solid metal sphere of radius of 6cm. If the ratio of the radii of the smaller spheres be3:4:5, then find the diameters of three smaller spheres.

A rubber ball of mass 10 g and radius 2 cm is submerged in water up to a depth of 5 cm and released. Find the height up to which the ball pops up above the surface of water, neglecting the resistance of water and air. The density of water = 1g*cm^(-3) .

The length of the side of a transparent cube is 18 cm . Inside the cube there is an air bubble. If it is seen from one face of the cube, the depth of the bubble is 2 cm and if it is seen from the opposite face the depth is 10 cm. What is the refractive index of the cube and what is the distance of the bubble from the first face?

A plano -concave lens is made of glass of refractive index 1.5 and radius of curvature of its curved face is 100 cm . What is the power of the lens ?