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Current Affairs January 2024

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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

Correct Answer :

A. Polarization


Related Questions

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4

What is the process by which a material acquires a positive or negative charge by gaining or losing electrons?

A. Conduction

B. Induction

C. Charging by friction

D. Polarization

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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

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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4

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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4

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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4

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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4

What is the SI unit of magnetic field strength?

A. Tesla

B. Weber

C. Gauss

D. Ampere

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4

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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4

What is the unit of electric current in the CGS system?

A. Ampere

B. Coulomb

C. Statampere

D. Ohm

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4

What is the SI unit of energy?

A. Joule

B. Watt

C. Newton

D. Volt

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4

What is the acceleration due to gravity on the surface of the Earth?

A. 9.8 m/s²

B. 6.67 × 10^-11 Nm²/kg²

C. 3.00 × 10^8 m/s

D. 1.6 m/s²

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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 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 process by which an atomic nucleus splits into smaller particles?

A. Radioactive decay

B. Nuclear fission

C. Nuclear fusion

D. Electron capture

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4

What is the phenomenon where a wave changes direction as it passes through a medium with a different density?

A. Reflection

B. Diffraction

C. Refraction

D. Interference

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4

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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4

Which type of lens is thicker in the center and thinner at the edges?

A. Convex lens

B. Concave lens

C. Plano-convex lens

D. Plano-concave lens

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4

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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4

Which law states that for every action, there is an equal and opposite reaction?

A. Newton's First Law of Motion

B. Newton's Second Law of Motion

C. Newton's Third Law of Motion

D. Law of Universal Gravitation

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4

What is the process by which a material becomes magnetized when placed in a magnetic field?

A. Induction

B. Magnetization

C. Polarization

D. Ferromagnetism

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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 SI unit of power?

A. Watt

B. Joule

C. Volt

D. Ampere

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4

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

A. Mass

B. Speed

C. Distance

D. Velocity

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4

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

A. Polarization

B. Diffraction

C. Dispersion

D. Interference

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4

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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4

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

A. Erg

B. Joule

C. Newton-meter

D. Watt-hour

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4

What is the process by which a solid changes directly into a gas without passing through the liquid phase?

A. Evaporation

B. Sublimation

C. Condensation

D. Melting

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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

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4

What is the SI unit of half-life in radioactive decay?

A. Second

B. Year

C. Joule

D. Becquerel

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4

What is the SI unit of electric potential?

A. Volt

B. Ampere

C. Ohm

D. Watt