A person standing before a concave mirror can not see hs image,unless he is beyond the centre of curvarture.Explain.

In these question, a statement of asertion followed by a statement of reason is given .Choose the correct answer out of the following choices: Assertion and reason both are correct statements and reason is correct explanation for assertion. Assertion and reason both are correct statements but reason is not correct explanation for assertion. Assertion is correct statement but reason is wrong statement. Assertion is wrong statement but reason is correct statement. Assertion:A person cannot see his image in a concave mirror, unless he is situated beyond the centre of curvature of the mirro. Reason:In a concave mirror image formed is real,provided the object is situated beyond its focus.

Describe with the help of diagram the natrue, size and position of the image formed when and object placed at centre of curvature of a concave mirror.

An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should the screen be placed, so that a sharp focussed image can be obtained? Find the size and the nature of the image

Suppose the lower half of the concave mirror's reflecting surface is covered with an opaque material.What effect this will have on the image of the object?Explain.

A person is six feet tall.How tall must a vertical mirror be,if he is able to see his entire length?

When an object is placed beyond centre of curvature of a concave mirror, the image is formed:

A person suffering form short sightedness cannot see objects beyond 1.2 m. for distinct vision he would use:

A concave mirror s placed on a horizontal table with its axis directed vertically upwards.Let O be the pole of the mirror canc C its centre of curvature.A point object is placed at C.It has a real image ,also located at C.If the mirror is now filled with water ,the image will be:

The speed of rotation of a person with some weights in his hands and standing on a rotating platform increases as he draws his arms close to his chest.Why?Explain.