Which of the following energy change involves frictional force?
(a) chemical energy to heat energy
(b) kinetic energy to heat energy
(c) potential energy to sound energy
(d) chemical energy to kinetic energy

Academic Physics NCERT Class 9

The change of kinetic energy into heat energy involves frictional force.

Therefore, option (b) is correct.

Tutorialspoint

Simply Easy Learning

Updated on: 10-Oct-2022

152 Views

Name the devices or machines which convert:(i) Electrical energy into sound energy.(ii) Heat energy into kinetic energy (or mechanical energy).(iii) Chemical energy into kinetic energy (or mechanical energy).(iv) Chemical energy into heat energy.(v) Light energy into heat energy.
Which of the following energy change involves frictional force?Potential energy to sound energyChemical energy to heat energyKinetic energy to heat energyChemical energy to heat energyChoose the correct option among the following:Both i and iiOnly ivBoth ii and iiiOnly iii
Mechanical energy of a body includes (a) kinetic energy only(b) potential energy only(c) kinetic energy and potential energy(d) none of these
Which of the following type of energy is used by living organisms to perform vital life processes?Kinetic energy, Chemical energy, Potential energy, Nuclear energy.
Example of conversion of heat energy into kinetic energy.
Name the devices or machines which convert:(a) Mechanical energy into electrical energy.(b) Chemical energy into electrical energy.(c) Electrical energy into heat energy.(d) Light energy into electrical energy.(e) Electrical energy into light energy.
Water stored in a dam possesses:(a) no energy(b) electrical energy(c) kinetic energy(d) potential energy
The energy possessed by an oscillating pendulum of a clock is: (a) kinetic energy(b) potential energy(c) restoring energy(d) mechanical energy
In photosynthesis process, solar energy is converted into which energy?(a) Carbohydrate energy(b) Growth energy(c) Chemical energy(d) Physical energy
A flying airplane possesses:(a)Only potential energy(b) Only kinetic energy(c) Both potential and kinetic energy(d) None of these
A ball is dropped from a height of 10 m:a. Its potential energy increases and kinetic energy decreases during the fallsb. Its potential energy is equal to the kinetic energy during the fall.c. The potential energy decreases and the kinetic energy increases during the fall.d. The potential energy is zero and kinetic energy is maximum while it is falling.
What are the differences between Kinetic Energy and Potential Energy?
In an ecosystem, the ten percent energy available for transfer from one trophic level to the next is in the form of :(a) heat energy (b) chemical energy(c) mechanical energy (d) light energy
How heat energy converted into light energy?
Rotational Kinetic Energy

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements