Question

Consider the following statements.
Statement 1: A plane mirror is made up of a smooth piece of lens.
Statement 2: A plane mirror reflects almost all light falling on it.
Which of the following is correct?​

Answer 1

Answer:

A is correct

The most common mirrors are flat and called plane mirrors. These mirrors are made by putting a thin layer of silver nitrate or aluminium behind a flat piece of glass. When you place an object in front of a mirror, you see an image of the same object in the mirror.

Explanation:

Most objects, however send back some light, which falls on their surface. Silver metal is one of the best reflectors of light. A polished block of silver metal reflects almost all the light falling on it and does not transmit or absorb any of the light rays. The smooth and polished surface of the silver metal can get easily scratched and may turn rough. In order to avoid this, ordinary mirrors are made by coating a thin layer of silver metal or mercury on one side of a plane glass sheet and this silver layer is protected by applying a coat of red paint over it.

Hence, the black silvered surface of a plane mirror reflects most of the light incidents on it.