Work is a quantity.

(Choose from: scalar/vector)

Important Questions on Effect of Energy : Work, Power & Energy

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 5 - Effect of Energy : Work, Power & Energy>EXERCISE>Q 2.1.

A moving bullet possess _____ energy.

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 5 - Effect of Energy : Work, Power & Energy>EXERCISE>Q 2.1.

$1 \mathrm{g} \mathrm{f} \mathrm{cm}$ = _____ erg

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 5 - Effect of Energy : Work, Power & Energy>EXERCISE>Q 2.1.

$1 \mathrm{HP}=$_____ $\mathrm{watt}$

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 5 - Effect of Energy : Work, Power & Energy>EXERCISE>Q 2.2.

In a tug of war, the work done by losing team is positive.

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 5 - Effect of Energy : Work, Power & Energy>EXERCISE>Q 2.2.

Absolute unit of power in SI system is $\mathrm{watt}$.

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 5 - Effect of Energy : Work, Power & Energy>EXERCISE>Q 2.2.

Centripetal force is a no-work force.

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 5 - Effect of Energy : Work, Power & Energy>EXERCISE>Q 2.2.

The water stored in a tank has potential energy.

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 5 - Effect of Energy : Work, Power & Energy>EXERCISE>Q 2.2.

The negative work is called the work done by the applied force.