Chapter 4 Work And Energy Physics 11th Class Punjab MCQ Tests
11th Class Physics Chapter 4 MCQ Tests
Chapter 4 of 11th Class Physics has 20 questions. If you take an online MCQ test, the system will randomly choose the questions. If you want to take the quiz by chapter then click the start test button.
Total Questions: 20
Total Marks: 20
Time: 20 Mins
Total Questions: 20
Total Marks: 20
Time: 20 Mins
20Min : 00 Sec Remaining
Question # 1
Find the power delivered to the turbine, if the rate of water from a stream falling on the turbines is 95 kgs−1. The height of stream is 109 m, and value of g is 9.8 ms−2.
Question # 2
Find the efficiency of a machine to which 230 J of energy is provided to lift a weight of 210 J in a vertical direction to a height of 0.5 m.
Question # 3
Find the power of a motor that lifts a weight of 5 N up to a height of 10 m in 9 s, where the value of g is 9.8 ms−2.
Question # 4
Which process takes place in a hydro power plant?
Question # 5
A workman rolls a barrel of weight 1000 N up a plank of length 1 m and then, onto a lorry. The back of the lorry is 0.3 m above the horizontal surface of the road. What is the work done on the barrel against gravity?
Question # 6
How can the mechanical advantage of a wheel and axle be increased?
Question # 7
A man of mass 80 kg has climbed stairs with a block of 10 kg on his head. The stairs have 10 steps, each one 10 cm high. Find the power, if it took time of 9 s by the man to climb the stairs. The value of g is 9.8 ms−2.
Question # 8
Calculate the force which causes a constant velocity of 25 ms−1 with a power of 15 kW.
Question # 9
When will be the mechanical advantage of a lever greater than 1?
Question # 10
The energy output of a generator depends on its efficiency and the energy input. Which of the following sets of values is correct?
Question # 11
What will be the output of a machine if its efficiency is 33 % and the input given to the machine is 330 J?
Question # 12
A piston of area 12 cm2 is pushed slowly into a very large cylinder containing gas at a pressure of 10N cm2. The pressure of the gas remains constant as the piston moves a distance of 0.2 m. What is the force of the gas on the piston and what is the work done by the piston on the gas?
Question # 13
What would be the angles between the displacement and force, that will give maximum and minimum work, respectively?
Question # 14
What will be the power of an engine of a car if it applies a force of 600 N continuously, so that the car has a velocity of 30 ms−1 along a straight road?
Question # 15
What is the major disadvantage of solar cells for power generation?
Question # 16
A man has lifted a bag of 10 kg to a height of 0.9 m, whereas nearby a block of mass 50 kg has been pushed across the floor through a distance of 3 m with a force of 30 N. In which of these cases, more work is done? The value of gravitational acceleration is 9.8 ms−2.
Question # 17
Which of the following energies is not derived from the sun?
Question # 18
How can geothermal energy be obtained?
Question # 19
A person holds a bucket of weight 90N and walks along the horizontal plane for 4 m, then climbs up a vertical distance of 3m. What is the total work done?
Question # 20
How can the efficiency of a thermal power plant be improved?
Total Questions
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Question # 1
Find the power delivered to the turbine, if the rate of water from a stream falling on the turbines is 95 kgs−1. The height of stream is 109 m, and value of g is 9.8 ms−2.
Question # 2
Find the efficiency of a machine to which 230 J of energy is provided to lift a weight of 210 J in a vertical direction to a height of 0.5 m.
Question # 3
Find the power of a motor that lifts a weight of 5 N up to a height of 10 m in 9 s, where the value of g is 9.8 ms−2.
Question # 4
Which process takes place in a hydro power plant?
Question # 5
A workman rolls a barrel of weight 1000 N up a plank of length 1 m and then, onto a lorry. The back of the lorry is 0.3 m above the horizontal surface of the road. What is the work done on the barrel against gravity?
Question # 6
How can the mechanical advantage of a wheel and axle be increased?
Question # 7
A man of mass 80 kg has climbed stairs with a block of 10 kg on his head. The stairs have 10 steps, each one 10 cm high. Find the power, if it took time of 9 s by the man to climb the stairs. The value of g is 9.8 ms−2.
Question # 8
Calculate the force which causes a constant velocity of 25 ms−1 with a power of 15 kW.
Question # 9
When will be the mechanical advantage of a lever greater than 1?
Question # 10
The energy output of a generator depends on its efficiency and the energy input. Which of the following sets of values is correct?
Question # 11
What will be the output of a machine if its efficiency is 33 % and the input given to the machine is 330 J?
Question # 12
A piston of area 12 cm2 is pushed slowly into a very large cylinder containing gas at a pressure of 10N cm2. The pressure of the gas remains constant as the piston moves a distance of 0.2 m. What is the force of the gas on the piston and what is the work done by the piston on the gas?
Question # 13
What would be the angles between the displacement and force, that will give maximum and minimum work, respectively?
Question # 14
What will be the power of an engine of a car if it applies a force of 600 N continuously, so that the car has a velocity of 30 ms−1 along a straight road?
Question # 15
What is the major disadvantage of solar cells for power generation?
Question # 16
A man has lifted a bag of 10 kg to a height of 0.9 m, whereas nearby a block of mass 50 kg has been pushed across the floor through a distance of 3 m with a force of 30 N. In which of these cases, more work is done? The value of gravitational acceleration is 9.8 ms−2.
Question # 17
Which of the following energies is not derived from the sun?
Question # 18
How can geothermal energy be obtained?
Question # 19
A person holds a bucket of weight 90N and walks along the horizontal plane for 4 m, then climbs up a vertical distance of 3m. What is the total work done?
Question # 20
How can the efficiency of a thermal power plant be improved?
Total Questions
1234567891011121314151617181920
Physics MCQ Test by Topics
- +4.1 Work Done by a Constant Force
- +4.2 Work Done by a Variable Force
- +4.3 WorkDone by Gravitational Field
- +4.4 Power
- +4.4 Power and Velocity
- +4.5 Energy
- +4.5 Work-Energy Principle
- +4.5 Absolute Potential Energy
- +4.5 Escape Velocity
- +4.6 Interconversion of Potential Energy and Kinetic Energy
- +4.7 Conservation of Energy
- +4.8 Non Conventional Energy Sources
- +4.8 Energy from Tides
- +4.8 Energy from Waves
- +4.8 Solar Energy
- +4.8 Energy From Biomass
- +4.8 Energy from Waste Products
- +4.8 Geothermal Energy
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Updated on: 21-05-2026
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