Oscillations and Waves (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 65 - 69 of 195

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Question number: 65

» Oscillations and Waves » Simple Pendulum

MCQ▾

Question

The bob of a pendulum of length l is pulled aside from its equilibrium position through an angle θ and then released. The bob will then pass through its equilibrium position with a speed v, where v equals

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 66

» 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 will be

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 67

» Oscillations and Waves » Resonance

MCQ▾

Question

Amplitude of a wave is represented by . Then resonance will occur when

Choices

Choice (4) Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

Question number: 68

» 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

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: 69

» Oscillations and Waves » Simple Pendulum

Assertion-Reason▾

Assertion (Ꭺ)

The percentage change in time period is 1.5 % if the length of simple pendulum increases by 3

Reason (Ꭱ)

Time period is directly proportional to length of pendulum

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is false but Ꭱ is true

d.

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

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