A lead ball with a certain velocity is made to strike a wall, it falls down, but rubber ball of same mass and with same velocity strikes the same wall, it rebounds. Select the correct reason from the following:

A Both the balls undergo an equal change in momentum
B The change in momentum suffered by rubber ball is more than the lead ball
C The change in momentum suffered by rubber ball is less than the lead ball
D None of the above

Correct Answer: The change in momentum suffered by rubber ball is more than the lead ball

Bissoy MCQ
#Mechanical Engineering #Engineering Mechanics

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Pick up the correct statement from the following. A rubber ball when strikes a wall rebounds but a lead ball of same mass and velocity when strikes the same wall, falls down
A Rubber and lead balls undergo equal changes in momentum
B Change in momentum suffered by lead ball is less that of rubber ball
C Momentum of rubber ball is less than that of lead ball
D None of these
A body of mass ‘m’ moving with a constant velocity ‘v’ strikes another body of same mass moving with same velocity but in opposite direction. The common velocity of both the bodies after collision is
A v
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C 4v
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A $${\text{v}}$$
B $$\frac{{\text{v}}}{2}$$
C $$\frac{{\text{v}}}{4}$$
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The surface of a certain planet reflects 80 percent of the light that strikes it. The clouds around the planet then absorb 40 percent of the reflected light. What percent of the light that strikes the planet is reflected from the surface and passes through the clouds without being absorbed?
A 32%
B 40%
C 48%
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A clock strikes once at 1 o'clock, twice at 2 o'clock, thrice at 3 o'clock and so on. How many times will it strike in 24 hours?
A 78
B 136
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Fill in the blanks by using appropriate words : "We cannot go on strike every year, Now that we have gone on strike we must-------this issue"
A culminate
B cross
C clinch
D co-ordinate

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