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Current Affairs January 2024

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4

What is the phenomenon where a wave is partially deflected and partially absorbed by a surface?

A. Reflection

B. Diffraction

C. Refraction

D. Absorption

Correct Answer :

D. Absorption


Related Questions

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4

What is the law that states that the net force acting on an object is equal to the mass of the object multiplied by its acceleration?

A. Newton's First Law of Motion

B. Newton's Second Law of Motion

C. Newton's Third Law of Motion

D. Law of Gravitation

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4

Which of the following is a type of nuclear radiation that consists of high-energy photons?

A. Alpha radiation

B. Beta radiation

C. Gamma radiation

D. Neutron radiation

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4

What is the SI unit of electrical conductance?

A. Siemens

B. Ohm

C. Farad

D. Volt

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

A. Vaporization

B. Deposition

C. Sublimation

D. Condensation

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4

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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4

What is the SI unit of magnetic flux?

A. Weber

B. Tesla

C. Henry

D. Gauss

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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

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

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 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 phenomenon where light waves oscillate in a single plane?

A. Polarization

B. Diffraction

C. Interference

D. Dispersion

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4

Which law states that an object at rest tends to stay at rest and an object in motion tends to stay in motion unless acted upon by an external force?

A. Newton's First Law of Motion

B. Newton's Second Law of Motion

C. Newton's Third Law of Motion

D. Law of Gravitation

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4

Which of the following is an example of a simple machine?

A. Lever

B. Inclined plane

C. Pulley

D. All of the above

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4

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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4

What is the SI unit of frequency?

A. Hertz

B. Newton

C. Pascal

D. Watt

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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 phenomenon where a wave combines with another wave to produce a wave with greater amplitude?

A. Reflection

B. Diffraction

C. Refraction

D. Constructive interference

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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 liquid changes into a gas below its boiling point?

A. Evaporation

B. Vaporization

C. Condensation

D. Sublimation

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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

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 the amount of matter in an object?

A. Mass

B. Weight

C. Volume

D. Density

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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

What is the law that states the total electric charge in a closed system is constant?

A. Coulomb's Law

B. Ohm's Law

C. Conservation of Charge

D. Ampere's Law

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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

What is the SI unit of magnetic flux density?

A. Tesla

B. Weber

C. Henry

D. Gauss