Physics MCQs for Class 9 with Answers
In falling object potential energy is covered to:
K.E
Force
P.E
Nil
The rate of doing work is called :
Power
Work
Efficiency
None of above
When a body is lifted through a height h, the work donw on it appears in the form of its.
Kinetic energy
Potential energy
Elastic energy
Geothermal energy
The ability of body to do work is called:
Power
Energy
Work
Efficiency
When a body is lifted through a height the work done on its appears in the form of its:
Kinetic energy
Potential energy
Elastic potential energy
Geothermal energy
Einstein’s mass-energy equation relation is:
E =1/2 mc2
E =mc2
E =m2c
E = 2 mc2
P.E is calculated by a formula :
Mgh
mg
gh
Nil
What will be the magnitude of work if a force of 25N pulls a stone through a distance of 5 m in its directions
25 J
50 J
75 J
125 J
The power of electric kettle is 500W and takes 2s to heat up, find heat generated?
E = 250 w
E = 1000 w
E = 10000 J
1KJ
Which of the following is non-renewable fossil fuel?
Oil
Coal
Gas
All of these
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