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Physics Class 11 Chapter 4
Work and Energy Test - 2
1.
A man can jumps higher than on earth due to?
a) Greater value of g at moon
b) smaller value of g at earth
c) Greater value of g at earth
d) Smaller value of g at moon
2.
Which force can do no work on the particle on which it acts?
a) Frictional force
b) Centripetal force
c) elastic force
d) Electromotive force
3.
1KWH=
a) 3.6x10J
b) 3.6x10J
c) 3.6x10J
d) 3.6x10J
4.
When a force is parallel to the direction of motion of the body, then work done on the body is?
a) Maximum
b) Minimum
c) Zero
d) Infinite
5.
The gravitational force and the distance of the object from the center of earth holds?
a) Inversely proportional
b) Directly proportional
c) Inverse relation
d) Inverse square relation
6.
If a body of mass of 2kg is raised vertically through 2m,then the work done is?
a) 392.1J
b) 38.2J
c) 389.2J
d) 39.2J
7.
Workddoneiismmaximumiifttheaanglebbetweentthefforceaandddisplacementiis?
a) 0
b) 180
c) 60
d) 45
8.
A field in which the work done in a moving body along closed path is zero is?
a) Electromagnet field
b) conservative field
c) Magnetic field
d) Electric field
9.
Dimensionally power is equal to?
a) [ML
-2
T
-3
]
b) [ML
3
T
2
]
c) [ML
2
T
3
]
d) [ML
2
T
-3
]
10.
Ability of a body to do work is known?
a) Minimum work
b) Maximum work
c) Power
d) Energy
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