NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 1650 - 1654 of 2142

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Question number: 1650

» Oscillations and Waves » Displacement as a Function of Time

MCQ▾

Question

The maximum velocity and the maximum acceleration of a body moving in a simple harmonic oscillator are 2 m/s and 6 m/s 2. Then angular velocity will be

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 1651

» Oscillations and Waves » Simple Pendulum

MCQ▾

Question

A simple pendulum is executing simple harmonic motion with a time period . If the length of the pendulum is increased by 21%, the percentage increase in the time period of the pendulum of is,

Choices

Choice (4) Response

a.

21%

b.

50%

c.

30%

d.

10%

Question number: 1652

» Electronic Devices » Semiconductors

Assertion-Reason▾

Assertion (Ꭺ)

We can measure the potential barrier of a PN junction by putting a sensitive voltmeter across its terminals.

Reason (Ꭱ)

The current through the PN junction is not same in forward and reversed bias.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are false

c.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

d.

Ꭺ is true but Ꭱ is false

Question number: 1653

» Electronic Devices » Semiconductors

MCQ▾

Question

The forbidden energy band gap in conductors, semiconductors and insulators are EG 1, EG 2 and EG 3 respectively. The relation among them is

Choices

Choice (4) Response

a.

EG 1 < EG 2 > EG 3

b.

EG 1 = EG 2 = EG 3

c.

EG 1 > EG 2 > EG 3

d.

EG 1 < EG 2 < EG 3

Question number: 1654

» Oscillations and Waves » Periodic Motion - Period Frequency

MCQ▾

Question

The amplitude of a particle executing S. H. M. with frequency of 35 Hz is 1cm. The maximum value of the acceleration of the particle is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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