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Current Affairs January 2024

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4

What is the phenomenon where light waves oscillate in multiple planes?

A. Polarization

B. Diffraction

C. Dispersion

D. Interference

Correct Answer :

B. Diffraction


Related Questions

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4

What is the unit of angular velocity?

A. Rad/s

B. m/s

C. Hz

D. Nm

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4

Which of the following statements about waves is true?

A. Longitudinal waves require a medium for propagation.

B. Transverse waves have oscillations perpendicular to the direction of wave motion.

C. Electromagnetic waves are an example of mechanical waves.

D. Sound waves are an example of electromagnetic waves.

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4

Which type of electromagnetic wave has the highest frequency?

A. Gamma rays

B. Radio waves

C. X-rays

D. Microwaves

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4

What is the SI unit of angular momentum?

A. Kilogram-meter per second

B. Joule-second

C. Newton-meter

D. Hertz

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4

What is the process by which an unstable atomic nucleus loses energy by emitting radiation called?

A. Radioactive decay

B. Nuclear fission

C. Nuclear fusion

D. Electron capture

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4

What is the phenomenon where light waves oscillate in a single plane?

A. Polarization

B. Diffraction

C. Interference

D. Dispersion

What is the correct answer?

4

What is the SI unit of electric potential difference?

A. Volt

B. Ampere

C. Ohm

D. Watt

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4

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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4

What is the SI unit of pressure?

A. Pascal

B. Newton

C. Joule

D. Watt

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4

What is the SI unit of heat energy?

A. Calorie

B. Joule

C. Newton-meter

D. Watt

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4

What is the SI unit of power?

A. Watt

B. Joule

C. Volt

D. Ampere

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4

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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4

Which of the following is an example of a longitudinal wave?

A. Sound wave

B. Light wave

C. X-ray

D. Radio wave

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4

What is the SI unit of resistance in an electrical circuit?

A. Ohm

B. Volt

C. Ampere

D. Watt

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4

What is the SI unit of electric potential energy?

A. Volt

B. Joule

C. Watt

D. Ohm

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4

What is the SI unit of magnetic susceptibility?

A. No unit (dimensionless)

B. Tesla per meter

C. Ampere per meter

D. Weber

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4

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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4

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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4

What is the SI unit of capacitance?

A. Farad

B. Ohm

C. Henry

D. Volt

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4

What is the SI unit of force?

A. Watt

B. Joule

C. Newton

D. Volt

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4

What is the SI unit of electric field strength?

A. Volt per meter

B. Newton per coulomb

C. Coulomb per second

D. Ampere per meter

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4

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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4

What is the SI unit of magnetic field strength in the CGS system?

A. Oersted

B. Tesla per meter

C. Ampere per meter

D. Weber

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4

What is the SI unit of intensity of sound?

A. Watt per square meter

B. Decibel

C. Hertz

D. Pascal

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4

What is the process of a solid changing directly into a gas called?

A. Evaporation

B. Sublimation

C. Condensation

D. Melting

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4

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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4

Which of the following is a measure of an object's resistance to changes in its state of motion?

A. Inertia

B. Momentum

C. Impulse

D. Damping coefficient

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4

Which of the following statements about nuclear reactors is true?

A. They use nuclear fusion to generate electricity.

B. They control nuclear fission reactions to produce heat.

C. They primarily use coal as a fuel source.

D. They do not involve the release of radiation.

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4

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

A. Coulomb

B. Statcoulomb

C. Ampere

D. Franklin

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4

What is the process by which a gas changes into a liquid?

A. Vaporization

B. Condensation

C. Sublimation

D. Fusion