West Bengal Police Constable Special Mock Test

Physics - Work Power Energy

1 / 10

1) What is the primary source of energy for the Earth?

A) Biomass

B) Sun

C) Wind

D) Geothermal

2 / 10

2) What is the main form of energy produced by a car engine?

A) Chemical energy

B) Electrical energy

C) Mechanical energy

D) Thermal energy

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3) What type of energy is stored in a battery?

A) Thermal energy

B) Kinetic energy

C) Nuclear energy

D) Chemical energy

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4) A cyclist of mass 70 kg is traveling at a speed of 5 m/s. How much additional work is needed to increase the speed to 10 m/s?

A) 2450 J

B) 1750 J

C) 3500 J

D) 4900 J

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5) What is the unit of work in the International System of Units?

A) Joule

B) Pascal

C) Watt

D) Newton

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6) Which of the following is a renewable energy source?

A) Nuclear

B) Coal

C) Natural gas

D) Solar

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7) What does the term 'work' refer to in physics?

A) The energy transferred to an object via force

B) The speed at which an object travels

C) The distance an object moves

D) The amount of force applied

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8) Which law states that energy cannot be created or destroyed?

A) Law of Motion

B) Law of Gravity

C) Law of Thermodynamics

D) Law of Conservation of Energy

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9) In a perfectly elastic collision, two bodies of masses m1 and m2 collide. If their initial velocities are u1 and u2 respectively, what is the relation between their final velocities v1 and v2?

A) m1*u1 + m2*u2 = m1*v1 + m2*v2

B) u1 + u2 = v1 + v2

C) m1*v1^2 + m2*v2^2 = m1*u1^2 + m2*u2^2

D) v1 - v2 = u1 - u2

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10) Which of the following is NOT an example of potential energy?

A) A moving car

B) A raised weight

C) Water held behind a dam

D) A compressed spring

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Curriculum

Physics (Work Power Energy কার্যক্ষমতা শক্তি)

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