Kinetic & Potential Energy NEET Questions

Physics - Work, Energy, and Power
Kinetic & Potential Energy

Kinetic & Potential Energy MCQ Questions


7.
A body of mass 2 kg moving at 3 m/s. Its kinetic energy is:
A.
3 J
B.
6 J
C.
9 J
D.
18 J
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ANSWER :
C. 9 J
8.
A bullet of mass 50 g moves at 200 m/s. Its kinetic energy is: [NCERT Ex 5.4 context]
A.
100 J
B.
500 J
C.
2000 J
D.
1000 J
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ANSWER :
D. 1000 J
9.
If the kinetic energy of a body is increased by 44%, its speed increases by approximately:
A.
44%
B.
22%
C.
44.5%
D.
20%
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ANSWER :
D. 20%
10.
An electron (mass mâ‚‘) has KE = 10 keV. A proton (mass mâ‚š = 1836 mâ‚‘) has KE = 100 keV. Which is faster? [NCERT Ex 5.12]
A.
Proton (higher KE)
B.
Electron (lower mass compensates for lower KE)
C.
Both have same speed
D.
Cannot determine
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ANSWER :
B. Electron (lower mass compensates for lower KE)
11.
Potential energy is:
A.
Energy due to motion
B.
Stored energy by virtue of position or configuration of a body
C.
Energy due to temperature
D.
Energy due to electric charge
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ANSWER :
B. Stored energy by virtue of position or configuration of a body
12.
Potential energy can be defined ONLY for:
A.
All forces
B.
Non-conservative forces like friction
C.
Conservative forces (gravity, spring force, etc.)
D.
Contact forces only
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ANSWER :
C. Conservative forces (gravity, spring force, etc.)
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