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Energy Conversion : Class 9 Science MCQ Practice Questions & Answers (Bengali) - ObjectiveMcq

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PracticeClass 9 SciencePhysicsEnergy Conversion

Energy Conversion in Class 9 Science : Practice MCQ Questions & Answers with Explanations

2 practice sets · Page 1 of 1

Class 9 ScienceMediumPhysicsEnergy ConversionElectrical Energy

1.

Which of the following devices converts electrical energy to mechanical energy?

A

Battery

B

Fan

C

Heater

D

Solar panel

Correct Answer:

B — Fan

Explanation:

A fan converts electrical energy into mechanical motion.

Class 9 ScienceMediumPhysics Work And EnergyEnergy Conversion

2.

When a ball is thrown upward, its kinetic energy is converted into?

A

Electrical energy

B

Potential energy

C

Heat energy

D

Chemical energy

Correct Answer:

B — Potential energy

Explanation:

As the ball rises, kinetic energy changes into potential energy.