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KEAM Mock Test

Physics

The velocity of an object is defined as:

A) Distance traveled divided by time

B) Change in displacement per unit time

C) Mass times acceleration

D) Force per unit area

Which of the following laws states that the total current entering a junction equals the total current leaving the junction?

A) Ohm’s Law

B) Kirchhoff’s Current Law

C) Kirchhoff’s Voltage Law

D) Faraday’s Law

The phenomenon of diffraction is most prominent when the size of the obstacle is:

A) Much larger than the wavelength of light

B) Comparable to the wavelength of light

C) Much smaller than the wavelength of light

D) Independent of the wavelength of light

The potential energy of an object at height h is given by:

A) \( mgh \)

B) \( \frac{1}{2}mv^2 \)

C) \( \frac{1}{2}kx^2 \)

D) \( qV \)

In a parallel circuit, the total resistance is:

A) The sum of individual resistances

B) The reciprocal of the sum of the reciprocals of individual resistances

C) Always greater than the highest resistance

D) Equal to the highest resistance

Which of the following particles has the least mass?

A) Proton

B) Neutron

C) Electron

D) Alpha particle

The time period of a simple pendulum is dependent on:

A) Its mass

B) The length of the pendulum

C) The amplitude of the swing

D) The material of the bob

The unit of magnetic flux is:

A) Tesla

B) Weber

C) Henry

D) Gauss

According to the second law of thermodynamics:

A) Energy can neither be created nor destroyed

B) Entropy of an isolated system always increases

C) Entropy of an isolated system always decreases

D) Energy is conserved in any process

The focal length of a convex lens is:

A) Always positive

B) Always negative

C) Zero

D) Sometimes positive, sometimes negative

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