Question

Energy can neither be created nor be destroyed, but these are interconvertible in nature.’’ How the interconversion of energy takes place in (i)burning of a cracker (ii)In a TV.​

Answer 1

Answer:

in crakers the chemical energy changes into heat and light energy and in TV the electric energy changes into light and sound energy.

Answer 2

Energy can neither be created nor be destroyed, but these are interconvertible in nature.

This interconversion of energy takes place in the following processes:

Burning of Cracker:

• The initial energy stored in cracker is Chemical energy.

• The final energy is thermal , light and sound energy.

• So, chemical energy stored in the cracker is converted to thermal energy, light energy and sound energy.

In a TV:

• The initial input of energy in a television is electrical energy.

• The output energy from a television is light energy.

• So, interconversion takes from electrical energy to light energy.

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