Question

An object of height 4cm is placed at a distance of 10cm from a plane mirror. calculate
a) the height of the image
b) distance of the image from the mirror
c) distance between the object and the mirror​

Answer 1

Answer: As it is a plane mirror every thing will be the same.

Explanation:

a) 4cm

b)10cm

c)10cm

Answer 2

Answer:

(a) 4 cm

(b) 10 cm

(c) 20 cm

Explanation:

(a) Because the height of the object is equal to the height of the image.

(b) Image distance from the mirror is equal to the object distance from the mirror.

(c) Question is wrong. because the question asks object distance from the mirror which is already given in the sum.The question should be distance between the object and the image.

Explanation for (c) : Sum of the object distance from the mirror and the image distance from the mirror.

= 10 cm + 10 cm

=20 cm

And if you consider the earlier question it will be 10 cm (As given in the question)