Physics MCQs for Class 9 with Answers
If the direction of motion of the force is perpendicular to the direction of motion of the body, then work done will be:
Maximum
Minimum
Zero
None of the above
One horse power is equal to:
746 W
749 W
764 W
794 W
If a force F makes an angle θ with the direction of motion of the force, then the formula for the work done will be:
W = FS
W = FS cosθ
W = FS sinθ
W = FS tanθ
One Megawatt is equal to :
1 × 106 w
1 × 102 kw
1015 w
Nil
The ability of a body to do work is known as
power
energy
kinetic energy
potential energy
One liter is equal to:
1 kgcm-3
1000 cm-3
10-6 m3
10-3 m3
Which one of the following converts light energy into electrical energy?
Electric bulb
Electric generator
Photo cell
Electric cell
The energy stored in coal is
Heat energy
Kinetic energy
Chemical energy
Nuclear energy
hp stands for :
1w
Horse power
Joule
All are true
The energy of a body during the motion is called:
Potential energy
Kinetic energy
Elastic P.E.
Heat energy
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