| 1 |
Identity the non conservative force among the following. |
- A. Frictional force
- B. Electrical force
- C. Gravitational force
- D. Elastic restoring force
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| 2 |
Which one is non renewable source of energy. |
- A. Hydro electric
- B. Bio mass
- C. Tides
- D. Oil
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| 3 |
The dimensions of work are |
- A. MLT<sup>-1</sup>
- B. MLT<sup>-2</sup>
- C. ML<sup>2</sup>T<sup>-2</sup>
- D. ML<sup>-1</sup>T<sup>-1</sup>
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| 4 |
The ability of a body to do work is called its |
- A. Force
- B. Power
- C. Capacity
- D. Energy
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| 5 |
A body has P.E. = mgh, when it is at height 'h' from the ground. At the point at the distance 'x' below from the top its P.E. with |
- A. mgh
- B. mgx
- C. mg(x-h)
- D. None of these
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| 6 |
Hot igneous rocks, usually in molten or partly molten state are found in the depth of |
- A. 5 km
- B. 10 km
- C. 15 km
- D. 20 km
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| 7 |
If velocity 'v' of an object is double, then K.E. because. |
- A. Remain same
- B. Sixteen times
- C. Double
- D. Four times
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| 8 |
The unit of energy is same as that of |
- A. Power
- B. Work
- C. Torque
- D. Density
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| 9 |
The work done in gravitational field |
- A. Depend upon the path
- B. Does not depend upon the path
- C. (+)ve
- D. Zero
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| 10 |
The frictional force is |
- A. Conservative force
- B. Non conservative force
- C. Electric force
- D. Magnetic force
|