A concave mirror is placed at the bottom of an empty tank with face upwards and axis vertical. When sunlight falls normally on the mirror, it is focussed at distance of `32cm` from the mirror. If the tank filled with water `(mu=4//3)` up to a height of `20cm`, then the sunlight will now get focussed at

The image of a point object placed at 10 cm from a concave mirror, is formed at a distance of 20 cm from the mirror. If the object is moved towards the mirror by 0.1 cm then the image

A concave mirror of radius of curvature 60 cm is placed at the bottom and height of 20 cm. The mirror faces upwards with its axis vertical. Solar light fall normally on the surface of water and image of sun is formed. If a mu_omega = 4/3 then will the observer in air, the distance of image from the surface of water is

A concave mirror of radius of curvature 60 cm is placed at the bottom of tank containing water upto a height of 20 cm. The mirror faces upwards with its axis vertical. Solar light falls normally on the surface of water and the image of the sun is formed. If ""_(a)mu_(w)=4/3 then with the observer in air, the distance of the image from the surface of water is:

A concave mirror of radius of curvature 60 cm is placed at the bottom of tank containing water upto a height of 20 cm. The mirror faces upwards with its axis vertical. Solar light falls normally on the surface of water and the image of the sun is formed. If ""_(a)mu_(w)=4/3 then with the observer in air, the distance of the image from the surface of water is:

A concve mirror of radius of curvature 1 m is placed at the bottom of a tank of water.The mirror forms an image of the sun,when it is directly overhead.Calculate the distance of the images from the mirror for different depths,80 cm and 40 cm of the water in the tank.

A plane mirror is placed at the bottom of a tank containing a liquid of refractive index mu . P is a small object at a height h above the mirror. An observes P and its image in the mirror. The apparent distance between two will be

An object4cm in height is placed at a distance of 36 cm from a concave mirror. The image is formed 18 cm in the front of the mirror. Find the height of the image.

A plane mirror is placed at the bottom of a tank containing a liquid of refractive index mu . P is a small object at a height h above the mirror. An observer observes P and its image in the mirror. The apparent distance between two will be