NEET Physics: Questions 1598 - 1600 of 2098

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Question number: 1598

» Electronic Devices » Semiconductors

MCQ▾

Question

The reverse biasing in a PN junction diode

Choices

Choice (4) Response

a.

Increases the number of minority charge carriers

b.

Decreases the potential barrier

c.

Increases the number of majority charge carriers

d.

Increases the potential barrier

Question number: 1599

» Oscillations and Waves » Displacement Relation for a Progressive Wave

MCQ▾

Question

Two blocks A and B each of mass m are connected by a massless spring of natural length L and spring constant k. The blocks are initially resting on a smooth horizontal floor with the spring at its natural length. A third identical block C also of mass m moves on the floor with a speed v along the line joining A and B and collides with A. Then

(1) The kinetic energy of the A - B system at maximum compression of the spring is mv24

(2) The maximum compression of the spring is Vm2k

(3) The kinetic energy of the A – B system at maximum compression of the spring is zero.

(4) The maximum compression of the spring is VmTk

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

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1 and 3 are correct

c.

1 and 2 are correct

d.

1, 2 and 3 are correct

Question number: 1600

» Oscillations and Waves » Simple Pendulum

MCQ▾

Question

If a simple pendulum oscillates with an amplitude of 50 mm and time period of 2 sec, then its maximum velocity is,

Choices

Choice (4) Response

a.

0.8ms

b.

0.26ms

c.

0.15ms

d.

0.10ms

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