Forces

What force is responsible for holding the nucleus of an atom together?

• Weak nuclear force

• Gravity

• Electromagnetic force

• Strong nuclear force

Which force is responsible for the process of radioactive decay?

• Gravity

• Weak nuclear force

• Strong nuclear force

• Electromagnetic force

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According to Newton's second law of motion, the acceleration of an object is directly proportional to:

• Its mass

• The net force acting on it

• The total momentum of the system

• The velocity of the object

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What does the law of conservation of momentum state?

• Momentum of an object is inversely proportional to the force applied

• Total momentum of an isolated system remains constant if no external forces act on it

• Total momentum of an isolated system changes with time

• Momentum of an object is proportional to its mass

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What does Newton's third law of motion state?

• Velocity of an object remains constant unless acted upon by an external force

• For every action, there is an equal and opposite reaction

• Total momentum of a system remains constant over time

• Acceleration is directly proportional to mass

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What is the unit of force in the International System of Units (SI)?

• Newton

• Joule

• Watt

• Pascal

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Which of the following is NOT a fundamental force in nature?

• Gravity

• Electromagnetic force

• Friction

• Strong nuclear force

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According to Newton's first law of motion, an object at rest will remain at rest unless:

• It is in a vacuum

• It is acted upon by an unbalanced force

• It has zero mass

• It is in motion

Which principle explains the working of a rocket?

• Newton's first law of motion

• Newton's second law of motion

• Newton's third law of motion

• Law of conservation of energy

Which of the following particles is affected by the weak nuclear force?

• Electron

• Neutron

• Proton

• All of the above

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