Work_ Energy And Power — Part 2 MCQs with Explanations

Potential energy is converted into kinetic energy is the correct answer to “What type of energy changes during the rain”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

Momentum is the correct answer to “Which one of the following is a vector quantity”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

Frictional force is the correct answer to “Which one of the following force is non-central and non-conservative”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

400J is the correct answer to “A man puts 20kg object on his head by raising the object 2m above from the surface of earth. Then work done will be-”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

m × a is the correct answer to “What will be the force applied on an object of mass 'm' which is moving with acceleration 'a'”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

1 and 2 is the correct answer to “Consider the following sentences. 1. In an inelastic collision, only momentum is conserved. 2. In elastic collision, both momentum and kinetic energy are conserved. 3. In an inelastic collision, both momentum and kinetic energy are conserved Which of the sentences given above are correct”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

0J is the correct answer to “Work done by a man standing on a platform holding 10kg suitcase is-”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

1500J is the correct answer to “An object of mass 30 kg is being transferred by 10 m/s uniform velocity. What is the kinetic energy of an object”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

Zero is the correct answer to “What is the work done if the angle between applied force and the direction of the displacement is 90°”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

5 m is the correct answer to “An object of 12 kg is placed at a certain height from the ground. If the potential energy of the object is 600 J, find the height of the object with respect to ground. (g = 10 ms -2 )”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

2 ms-2 is the correct answer to “Calculate the acceleration produced when a force of 100 N is applied to an object of mass 50 kg.”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

Both Kinetic energy and Potential energy is the correct answer to “There is a body falling from a mountain has”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

Object must be displaced is the correct answer to “To say that the work has been done, two conditions must be completed, one of them is-”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

175J is the correct answer to “An object of mass 14kg is moving at the velocity of 5m/s. Find the kinetic energy contained in an object”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

mass × velocity is the correct answer to “Momentum = . . . . . . . .”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

20 kg is the correct answer to “If the weight of an object is 200 N, find its mass. (g = 10 ms -2 )”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

gravitational force is the correct answer to “The example of the conservative force is”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

momentum = mass × velocity is the correct answer to “Which of the following equations calculates momentum”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

Momentum-conservation law is the correct answer to “Flying a rocket can be understood by . . . . . . . .”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

80J is the correct answer to “20 N force is acting on a body. Body moves 4 meter in direction of applied force, then work done is-”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

Both vehicles have kinetic energy is the correct answer to “What can be predicted with respect to the energy in the given figure”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

A is false, but R is true is the correct answer to “Assertion (A) Work done by friction on a body sliding down an inclined plane is positive. Reason (R) Work done is greater than zero it the angle between force and displacement is acute.”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

Work is the correct answer to “The product of force and displacement is called-”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

1500J is the correct answer to “When the hammer of 15kg is raised to a height of 10m, find the potential energy obtained by it”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

light energy to electrical energy is the correct answer to “A photoelectric cell converts”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

Mass is the correct answer to “Force/acceleration”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

8m is the correct answer to “The work done by an object is 56 J and applied force on object is 7 N. Find the displacement.”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

Change in shape of an object is the correct answer to “Which of the following is the effect of balanced force applied on an object”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

5,100 kg ms-1 is the correct answer to “The mass of an object is 85 kg and the velocity is 60 ms -1 . Find the momentum of the object.”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

500W is the correct answer to “A person does 1000J of work in 2s. What was the energy he spent”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

Thermal is the correct answer to “In the correct of Ocean Energy Conversion, 'T' in OTEC stands for”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

Any work has not done is the correct answer to “If an object not moving after applying a force, then we can say that-”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

20 kgms-1 is the correct answer to “An object of mass 10 kg is moving with a velocity of 2 ms -1 . The momentum contained in the object is-”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

The energy released during conversion goes into vacuum is the correct answer to “Which of the following statement regarding energy is not true”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

4 time is the correct answer to “If the speed of the cycle is doubled then the kinetic energy will be”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

Work done is the correct answer to “Power = $$\frac{W}{T}$$, what is the meaning of W”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

4 is the correct answer to “If the velocity of an object becomes twice that of its initial velocity, then its kinetic energy become n times of its initial kinetic energy. Then what would be the value of n”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

Kinetic energy is the correct answer to “Which energy of the wind does a windmill use”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

Mass is the correct answer to “Inertia of an object is measured in which of the following”. This question is standard in competitive examination syllabi for Work_ Energy And Power.

A man pushing against the wall is the correct answer to “Which of the following is not an example of work done”. This question is standard in competitive examination syllabi for Work_ Energy And Power.