Which of the following statements about gravity is true?

Question

Which of the following statements about gravity is true?

A. It is a contact force.

B. It is a repulsive force.

C. It is a conservative force.

D. It only acts on planets and stars.

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What is the SI unit of angular acceleration?

A. Rad/s²

B. m/s²

C. Hz

D. Nm

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Which of the following statements about transformers is true?

A. They only work with direct current (DC).

B. They can increase or decrease voltage in an electrical circuit.

C. They do not involve the principle of electromagnetic induction.

D. They are used to store electrical energy.

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Which of the following statements about electric fields is true?

A. Electric fields always point towards positive charges.

B. Electric fields are vectors and have both magnitude and direction.

C. Electric fields only exist inside conductors.

D. Electric fields do not interact with magnetic fields.

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What is the phenomenon where a wave interacts with an obstacle and bends around it?

A. Reflection

B. Diffraction

C. Refraction

D. Interference

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What is the SI unit of power?

A. Watt

B. Joule

C. Volt

D. Ampere

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Which type of nuclear decay releases a beta particle?

A. Alpha decay

B. Beta decay

C. Gamma decay

D. Electron capture

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What is the SI unit of magnetic flux?

A. Weber

B. Tesla

C. Henry

D. Gauss

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Which of the following statements about electric potential energy is true?

A. It is a scalar quantity.

B. It depends on the charge of the object and the distance from another charge.

C. It is always negative.

D. It is measured in amperes.

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What is the SI unit of capacitance?

A. Farad

B. Ohm

C. Henry

D. Volt

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What is the unit of electric charge?

A. Coulomb

B. Volt

C. Ampere

D. Farad

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Which type of energy is associated with the motion of atoms and molecules?

A. Kinetic energy

B. Potential energy

C. Thermal energy

D. Mechanical energy

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Which law states that the force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them?

A. Coulomb's Law

B. Ohm's Law

C. Ampere's Law

D. Faraday's Law

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Which law states that the total momentum of an isolated system remains constant if no external forces act on it?

A. Newton's First Law of Motion

B. Newton's Second Law of Motion

C. Newton's Third Law of Motion

D. Law of Conservation of Momentum

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What is the SI unit of pressure?

A. Pascal

B. Newton

C. Joule

D. Watt

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What is the SI unit of frequency in the CGS system?

A. Hertz

B. Rad/s

C. Cycles per second

D. Revolutions per minute

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Which of the following is a type of nuclear radiation that consists of high-speed electrons or positrons?

A. Alpha radiation

B. Beta radiation

C. Gamma radiation

D. Neutron radiation

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What is the SI unit of magnetic pole strength?

A. Ampere-meter

B. Weber

C. Tesla

D. Ampere

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Which of the following is a fundamental particle found in the nucleus of an atom?

A. Neutron

B. Electron

C. Proton

D. Photon

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What is the formula for calculating electric power in a circuit?

A. P = VI

B. P = V²/R

C. P = I²R

D. P = V/R

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What is the SI unit of electric charge in the MKS system?

A. Coulomb

B. Statcoulomb

C. Ampere

D. Franklin

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Which of the following statements about nuclear fusion is true?

A. It releases energy when light nuclei combine to form heavier nuclei.

B. It is the process that powers stars.

C. It is a type of radioactive decay.

D. It involves the emission of beta particles.

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Which of the following is an example of a vector quantity?

A. Mass

B. Speed

C. Distance

D. Velocity

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What is the SI unit of magnetic flux density?

A. Tesla

B. Weber

C. Henry

D. Gauss

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What is the phenomenon where a wave superposes with another wave, resulting in a new wave pattern?

A. Reflection

B. Diffraction

C. Refraction

D. Interference

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What is the phenomenon where a wave undergoes a change in direction due to a change in medium?

A. Reflection

B. Diffraction

C. Refraction

D. Interference

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What is the phenomenon where light is separated into its component colors due to refraction and reflection within a material?

A. Dispersion

B. Polarization

C. Diffraction

D. Interference

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What is the SI unit of electric potential energy?

A. Volt

B. Joule

C. Watt

D. Ohm

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What is the process by which a material becomes electrically charged when brought in contact with a charged object?

A. Conduction

B. Induction

C. Charging by friction

D. Polarization

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Which law states that the volume of a gas is directly proportional to its absolute temperature at constant pressure?

A. Boyle's Law

B. Charles's Law

C. Gay-Lussac's Law

D. Avogadro's Law

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Which of the following is a measure of a material's ability to conduct an electric current?

A. Conductance

B. Impedance

C. Susceptance

D. Inductance

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Accepted Answer

C. It is a conservative force.

Which of the following statements about gravity is true?

Correct Answer :

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