Question

A kid had a coin and wanted to perform a trick with it as mentioned.
Case 1: He wanted to get 5 virtual images of the coin.
Case 2: He wanted to get 3 virtual images of the coin.

In both cases, how many minimum numbers of plane mirrors have to be used and what should be the orientation of the mirrors (angles between them).

• A. Case 1:2 mirrors and 90${}^{\circ }$, Case 2:2 mirrors and 60${}^{\circ }$
• B. Case 1:2 mirrors and 60${}^{\circ }$, Case 2:2 mirrors and 90${}^{\circ }$
• C. Case 1:2 mirrors and 120${}^{\circ }$, Case 2:2 mirrors and 60${}^{\circ }$
• D. Case 1:2 mirrors and 90${}^{\circ }$, Case 2:2 mirrors and 120${}^{\circ }$

Answer 1

The correct option is B Case 1:2 mirrors and 60${}^{\circ }$, Case 2:2 mirrors and 90${}^{\circ }$