Question

Light is a form of energy that causes a sensation of warmth or coldness.
A) True
B) False

Answer 1

Hint: Light is the form of energy that helps us to see the world around us. It is the electromagnetic radiation emitted by hot objects like bulbs, lasers, burning substances, the sun, and other stars. Light is thus always moving and cannot be stored or held.

Complete answer:
Heat is a form of energy that travels from higher temperature to lower temperature, i.e., from a warmer region to a colder region. Temperature is the degree of hotness or coldness of a body. It is mainly measured in three scales, namely, Celsius, Kelvin, and Fahrenheit.
Heat energy can efficiently be transferred by three methods:
Conduction: Heat transfers from one molecule to another only if they are in physical contact with each other. For example, our hand burns when we touch a very hot object.
Convection: Heat transferred within fluids. For example, when we keep a vessel filled with water on the flame, the entire bulk of water becomes hot.
Radiation: Heat is transferred to long distances without any physical contact between them.
For example, the sun radiates energy to the earth.

The correct answer is (B), False.

Light is not a form of energy that causes the sensation of warmth or coldness. Heat is the form of energy that causes the sensation of warmth or coldness and is referred to as thermal energy.

Note: Light energy is often confused with thermal energy because a light-emitting object also undergoes a change in its thermal energy. Light is a collection of small packets of photons. When atoms of an object are heated up, only then it results in the production of photons, and hence light is emitted.