A boy stands straight in front of a mirror at a distance $30cm$ away from it. He sees his erect image whose height is ${\left(\frac{1}{5}\right)}^{th}$ of his real height. The mirror he is using is :

Q.

A boy stands straight in front of a mirror at a distance of 30cm away from it.

He sees his erect image whose height is of his real height. The mirror he is using is

[MP PMT 1993]

Q.

A boy stands straight in front of a mirror at a distance of 30cm away from it.

He sees his erect image whose height is of his real height. The mirror he is using is

[MP PMT 1993]

Q. A person stands straight in front of a convex mirror at a distance of 20 m away from it. He sees his erect image whose length is 1/5th of his real height. Find the focal length of the convex mirror.

Q. A boy of height $1m$ stands in front of a convex mirror. His distance from the mirror is equal to its focal length. The height of his image is :

Q. A boy $2\text{m}$ tall stands at a distance $40\text{cm}$ in front of a mirror. He sees an erect image $1\text{m}$ high. The nature of mirror is