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Force Motion and Energy


1. 

A loudspeaker converts

Answer : A. electrical energy into sound energy

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2. 

The formula to calculate the force is

Answer : A. F = ma

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3. 

Non-conventional source of energy best suited for India is

Answer : A. Solar energy

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4. 

Which of the following functions is performed by a photo-cell?

Answer : D. It converts light energy into electrical energy

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5. 

Which one of the following device converts electrical energy into mechanical energy

Answer : D. electric motor

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6. 

In a dynamo

Answer : A. Mechanical energy is converted into electrical energy

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