NEET Physics: Questions 1594 - 1597 of 2098

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Question number: 1594

» Oscillations and Waves » Simple Harmonic Motion » Oscillations of a Spring

MCQ▾

Question

A spring having a spring constant k is loaded with a mass m. The spring is cut into two equal parts and one of these is loaded again with the same mass. The new spring constant is,

Choices

Choice (4) Response

a.

2k

b.

kl2

c.

k

d.

k2

Question number: 1595

» Electronic Devices » Semiconductor Diode

MCQ▾

Question

The mobility of free electrons is more that the mobility of holes because,

Choices

Choice (4) Response

a.

They require less energy to continue their motion.

b.

They carry negative charge

c.

They are of smaller size

d.

They suffer less number of collisions

Question number: 1596

» Oscillations and Waves » Simple Harmonic Motion » Energy

MCQ▾

Question

A particle constrained to move along the x-axis in a potential V = kx 2, is subjected to an external time dependent force f (t), here k is a constant, x is the distance from the origin and t is the time. At some time T, when the particle has zero velocity at x = 0, the external force is removed. Choose the incorrect options -

(1) Particle executes SHM

(2) Particle moves along + X direction

(3) Particle moves along - X direction

(4) Particle remains at rest

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1, 2 and 3 are correct

b.

2 and 4 are correct

c.

1 and 2 are correct

d.

1 and 3 are correct

Question number: 1597

» Electronic Devices » Zener Diode

MCQ▾

Question

The correct symbol for Zener diode is,

Choices

Choice (4) Response

a.

An electric symbol (Choice A)

An Electric Symbol (Choice A)

In figure a symbol for electric element is described

b.

 An electric symbol (Choice B)

an Electric Symbol (Choice B)

In figure a symbol for electric element is described

c.

 An electric symbol (Choice C)

an Electric Symbol (Choice C)

In figure a symbol for electric element is described

d.

An electric symbol (Choice D)

An Electric Symbol (Choice D)

In figure a symbol for electric element is described

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