Question 21 : If the height gained by the block is half of the initial case, the potential energy will also be ________ of the initial potential energy.
1. Half
2. Double
3. Four times
4. None of the mentioned
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Question 22 : If the velocity of the block is doubled, the kinetic energy of the block will be
1. Half
2. Double
3. Four times
4. None of the mentioned
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Question 23 : If the block is initially at a height of 2 m and with zero velocity. What is the maximum velocity it can gain?
1. 2.26
2. 4.26
3. 6.26
4. 8.26
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Question 24 : If the block uses the whole energy to gain some height, what will be that height?
1. 0.104 m
2. 0.204 m
3. 0.304 m
4. 0.404 m
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Question 25 : The total energy of the block _________ in every operation.
1. Increases
2. Decreases
3. Remains constant
4. None of the mentioned
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Question 26 : If the block gets a height of 0.2 m using some of the kinetic energy what is the kinetic energy of the block after reaching the extreme point?
1. 0.01 J
2. 0.02 J
3. 0.03 J
4. 0.04 J
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Question 27 : If the block gets a height of 5 m, what is the potential energy of the block?
1. 49 J
2. 98 J
3. 87 J
4. 98 J
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Question 28 : What is the kinetic energy of the block?
1. 1 J
2. 2 J
3. 3 J
4. 4 J
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Question 29 : A mass having an initial kinetic energy of 40 Jules gets a potential energy of 10 Jules by reaching at a height h. What is the kinetic energy of the mass now?
1. 10 J
2. 20 J
3. 30 J
4. 40 J
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Question 30 : Law of conservation of energy states that
1. Total energy of the universe is always constant
2. Total energy of the universe is always increasing
3. Total energy of the universe is always decreasing
4. None of the mentioned
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