Oscillations and Waves-Simple Harmonic Motion (NEET Physics): Questions 20 - 24 of 36

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Passage

The differential equation of a particle undergoing SHM is given by ad2xdt2+bx=0 .

The particle starts from the extreme position.

Question number: 20 (2 of 2 Based on Passage) Show Passage

» Oscillations and Waves » Simple Harmonic Motion » Phase

MCQ▾

Question

The equation of motion may be given by:

Choices

Choice (4) Response

a.

x=Acos[ba]t

b.

x=Asin[ba]t

c.

x=Asin[bat+θ]whereθπ2

d.

Question does not provide sufficient data or is vague

Question number: 21

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

MCQ▾

Question

A simple pendulum has time period T 1. The point of suspension is now moved upward according to equation y = kt 2 where k = l m/sec 2. If new time period is T 2 then ratio T12T22 will be

Choices

Choice (4) Response

a.

56

b.

23

c.

32

d.

65

Question number: 22

» Oscillations and Waves » Simple Harmonic Motion » Phase

Assertion-Reason▾

Assertion (Ꭺ)

In simple harmonic motion, the velocity is maximum, when acceleration is minimum.

Reason (Ꭱ)

Displacement and velocity of S. H. M. differ in phase by π2

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Ꭺ is true but Ꭱ is false

c.

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

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 23

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

MCQ▾

Question

A spring of force constant k is cut into two pieces such that one piece is double the length of the other. Then the short piece will have a force constant of

Choices

Choice (4) Response

a.

6k

b.

(23)k

c.

3k

d.

(32)k

Question number: 24

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

MCQ▾

Question

A spring of force constant k is cut into two pieces such that one piece is double the length of the other. Then the long piece will have a force constant of

Choices

Choice (4) Response

a.

6k

b.

(23)k

c.

3k

d.

(32)k

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