A highly polished curved surface whose reflecting surface is a cut part of a hollow sphere of a glass or any polished metal is called ______________.

Which of the following is a translucent object ?

Reflection by a regular surface is referred to as ____________  reflection.

The small bumps and irregularities on a rough surface cause each of the light rays to reflect in different directions. This kind of reflection is called ____________ reflection.

Which of the following is a ray ?

In the case of concave mirror if the object is at C and the image formed at C, the nature of image is ____________________.

In an Concave mirror, When the object is at infinity, the image will be formed  ___________________.

Light travel in _______________________ .

In a convex mirror, if object is at infinity, the image formed ___________________, than the nature of image is Virtual, point -sized.

Centre of curvature of a spherical mirror is the _________________

Which of the following are correct :

(a) A narrow path of light represented by a line with an arrow head showing the direction in which it is traveling called a ray of light. 

(b) A group of light rays is called a beam of light.

(c) When the group of rays are parallel to each other such beam of light is called a parallel beam of light.

Which of the following are correct :

(a) Light travels along straight lines in a medium or in vacuum.

(b) Reflection happens when light get absorbed by the medium like glass and  does not get reflected, absorbed and scattered.

The light ray from a point object placed at the focus of a concave mirror, after refection:

Which of the following are correct in the case of concave mirror :

(a) If the object between C and F,the image formed between C and infinity,than, the nature of image is real, enlarged, inverted.

(b) If the object at F or behind the mirror, the image formed at infinity, than the nature of image is real, infinitely large, inverted.

(c) If the object is between the pole P and F, the image formed behind the mirror, than the nature of image is virtual, enlarged, erect.

Which of the following are correct :

(a) A narrow path of light represented by a line with an arrow head showing the direction in which it is traveling called a ray of light.

(b) When the group of rays are parallel to each other such beam of light is called a parallel beam of light.

(c) A group of light rays is called a beam of light.

(d) When the group of rays are not parallel to each other but are converging at a point such beam of light is called a convergent beam of light.