Question

Write whether of the following objects are luminous or non-luminous.
Object Luminous/Non-luminous
A book
A burning candle
A wax cloth
A pencil
A pen
A light bulb
A tyre
A torch

Answer 1

Luminous objects- are the ones which exhibit light in their own. Ex- Sun, candle.

Non luminous objects- are the ones that reflect light from the luminous objects. Ex- moon, earth.

A book; luminous object.

A burning candle ; luminous object.

A wax cloth; non- luminous object.

A pencil ; non luminous object

A pen ;non luminous object.

A light bulb; luminous object.

A tyre ; non luminous object.

A torch ; luminous object.

Answer 2

a book=non luminous

a burning candle = luminous

a wax cloth= non luminous

a pencil= non luminous

a pen = non luminous

a light bulb = luminous

a tyre= non luminous

a torch= luminous