The image formed by a plane mirror of an object is due to which phenomenon?

Q. Which of the following images is real?

(a) image formed by a plane mirror
(b) image formed by a convex mirror
(c) image formed by a concave mirror with object between the mirror and focus
(d) image formed by a convace mirror with object behind the focus

Q. A point object placed mid-way between two plane mirrors distance 'a' apart. The plane mirror forms an infinite of image due to multiple reflection. The distance between the nth order image formed in the two mirrors is

Q. A point object is placed mid-way between two plane mirrors which are $a$ distance apart. The plane mirrors forms an infinite number of images due to multiple reflections. The distance between the $n^{\text{th}}$ order image (i.e $n^{th}$ image in both the mirrors) formed in the two mirrors is

Q.

Image on an object is formed by two plane mirrors one of the plane mirror is double the size of the other in which case will theimage be bigger and why

Please check my answer

Ans. The image of the object in both the Mirrors would be the same as it is one of the characteristics of the image formed by a plane mirror the image formed on the plane mirror would be the exact size of the object

Q.

Find out the image position formed by concave mirror, considering the image formed by plane mirror as an object for concave mirror.