West Bengal Police Constable Special Mock Test

Physics - Work Power Energy

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

A) Chemical energy

B) Thermal energy

C) Electrical energy

D) Mechanical energy

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

A) Nuclear energy

B) Kinetic energy

C) Chemical energy

D) Thermal energy

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

A) Sun

B) Geothermal

C) Wind

D) Biomass

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

A) Water held behind a dam

B) A moving car

C) A raised weight

D) A compressed spring

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

A) Law of Thermodynamics

B) Law of Motion

C) Law of Gravity

D) Law of Conservation of Energy

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6) 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) 1750 J

B) 2450 J

C) 3500 J

D) 4900 J

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

A) Solar

B) Coal

C) Natural gas

D) Nuclear

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

C) v1 - v2 = u1 - u2

D) u1 + u2 = v1 + v2

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

A) Pascal

B) Joule

C) Newton

D) Watt

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

A) The energy transferred to an object via force

B) The amount of force applied

C) The speed at which an object travels

D) The distance an object moves

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Curriculum

Physics (Work Power Energy কার্যক্ষমতা শক্তি)

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