Question

1) Explain why are concave and convex are called spherical mirror

2) is it possible to obtain the image on the screen when the candle is too close to concave mirror

3) can you get a real image at any distance of the object from the concave mirror

4) name the phenomenon that is involved in the formation of image of an object by a concave mirror

5) mention the type of image formed on a cinema screen 6) as we know that an image is formed by actual intersection of rays and can be obtained on the screen. So state whether it is real or virtual image​

Answer 1

Answer:

Concave and convex mirrors are called spherical mirror because their reflecting surfaces are the parts of hollow sphere of glass. The reflecting surface is not plane.

Answer 2

Answer:

1) They are called spherical mirror because the reflecting surface of concave and convex mirrors are considered to form a part of a hollow sphere.

2)We see that the image formed by a concave mirror can be smaller or larger in size than the object. The image may also be real or virtual.

3)When the object is far from the mirror, the image is inverted and at the focal point. The image is real light rays actually focus at the image location). 

4)The phenomenon that is involved in the formation of image of an object by a concave mirror is a reflection of light.

5) The image formed on a cinema screen is real because it is formed due to an actual meeting of the light rays.

6) Since, after the actual intersection of rays, the image obtained on the screen is always real image.