Physics MCQ with Answers

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Physics MCQ with Answers

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Which of the following statements is true regarding Newton’s First Law of Motion?
a) An object at rest will remain at rest unless acted upon by a force.
b) Force is equal to mass times acceleration.
c) For every action, there is an equal and opposite reaction.
*d) An object in motion will remain in motion unless acted upon by an external force.

Which of the following units is used to measure force?
a) Joules
*b) Newtons
c) Watts
d) Amperes

Which of the following statements is true about potential energy?
*a) Potential energy is energy that an object has due to its position in a force field.
b) Potential energy is the energy of motion.
c) Potential energy is the energy that an object has due to its mass.
d) Potential energy is a type of kinetic energy.

Which of the following is true regarding Ohm’s Law?
a) The current flowing through a conductor is inversely proportional to the voltage applied.
b) The resistance of a conductor is directly proportional to the current flowing through it.
c) The voltage applied to a conductor is directly proportional to the current flowing through it.
*d) The current flowing through a conductor is directly proportional to the voltage applied.

Which of the following is a unit of power?
a) Ohm
b) Joule
*c) Watt
d) Newton

Which of the following statements is true about electric charge?
a) Electric charge is always positive.
b) Electric charge can be created but never destroyed.
*c) Electric charge can be positive or negative.
d) Electric charge always flows from positive to negative.

Which of the following is true regarding the law of conservation of energy?
a) Energy can be created or destroyed.
b) Energy can be created, but not destroyed.
c) Energy can be destroyed, but not created.
*d) Energy cannot be created or destroyed, only transformed from one form to another.

Which of the following is true about work done?
a) Work done is always positive.
b) Work done is always negative.
c) Work done is equal to force multiplied by acceleration.
*d) Work done is equal to force multiplied by displacement.

Which of the following statements is true about sound waves?
a) Sound waves cannot travel through a vacuum.
*b) Sound waves are longitudinal waves.
c) Sound waves travel faster in solids than in gases.
d) Sound waves cannot be reflected or refracted.

Which of the following is true regarding nuclear fission?
a) Nuclear fission involves the fusion of two atomic nuclei.
b) Nuclear fission is a natural process that occurs in the sun.
*c) Nuclear fission involves the splitting of an atomic nucleus into two or more smaller nuclei.
d) Nuclear fission produces energy through the conversion of matter into energy.

Physics MCQ- ANSWERS WITH EXPLANATION
Here are Physics MCQ answers with explanations:

Answer: d) An object in motion will remain in motion unless acted upon by an external force.
Explanation: This is the statement of Newton’s First Law of Motion. It states that an object will maintain its state of motion (either at rest or in motion with a constant velocity) unless acted upon by an external force.

Answer: b) Newtons
Explanation: Force is the amount of push or pull applied on an object. It is measured in Newtons (N).

Answer: a) Potential energy is energy that an object has due to its position in a force field.
Explanation: Potential energy is the energy that an object possesses due to its position relative to other objects or due to the configuration of its internal components. It is stored energy that can be converted to kinetic energy when the object is in motion.

Answer: d) The current flowing through a conductor is directly proportional to the voltage applied.
Explanation: Ohm’s Law states that the current flowing through a conductor is directly proportional to the voltage applied and inversely proportional to the resistance of the conductor. It can be expressed as I = V/R, where I is the current, V is the voltage, and R is the resistance.

Answer: c) Watt
Explanation: Power is the rate at which work is done or energy is transferred. It is measured in Watts (W).

Answer: c) Electric charge can be positive or negative.
Explanation: Electric charge is a fundamental property of matter. It can be positive or negative and can be created or destroyed.

Answer: d) Energy cannot be created or destroyed, only transformed from one form to another.
Explanation: The law of conservation of energy states that energy can neither be created nor destroyed, but it can be transformed from one form to another.

Answer: d) Work done is equal to force multiplied by displacement.
Explanation: Work done is the amount of energy transferred when a force is applied over a certain distance. It can be calculated as W = F x d, where W is the work done, F is the force, and d is the displacement.

Answer: b) Sound waves are longitudinal waves.
Explanation: Sound waves are a type of mechanical wave that require a medium to travel through. They are longitudinal waves, which means that the particles of the medium vibrate parallel to the direction of wave propagation.

Answer: c) Nuclear fission involves the splitting of an atomic nucleus into two or more smaller nuclei.
Explanation: Nuclear fission is a process in which the nucleus of an atom is split into two or more smaller nuclei, releasing a large amount of energy. This process is used in nuclear power plants to generate electricity.

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