# Oscillations and Waves-Free Forced and Damped Oscillations (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 1 - 3 of 3

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## Question number: 1

» Oscillations and Waves » Free Forced and Damped Oscillations

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MCQ▾

### Question

A simple pendulum of length L and mass (bob) M is oscillating in a plane about a vertical line between angular limits – ϕ and + ϕ. For an angular displacement θ (| θ| < ϕ), the tension in the string and the velocity of the bob are T and v respectively. The following relations hold good under the above conditions.

(1)

(2)

(3) The magnitude of the tangential acceleration of the bob

(4)

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

### Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1,2 and 3 are correct

c.

1 and 2 are correct

d.

1 and 3 are correct

## Question number: 2

» Oscillations and Waves » Free Forced and Damped Oscillations

Edit
MCQ▾

### Question

A simple pendulum of length L and mass (bob) M is oscillating in a plane about a vertical line between angular limits – ϕ and + ϕ. For an angular displacement θ (| θ| < ϕ), the tension in the string and the velocity of the bob are T and v respectively. The following relations hold good under the above conditions.

(1)

(2)

(3) The magnitude of the tangential acceleration of the bob

(4)

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

### Choices

Choice (4) Response

a.

1 and 3 are correct

b.

2 and 4 are correct

c.

1 and 2 are correct

d.

1,2 and 3 are correct

## Question number: 3

» Oscillations and Waves » Free Forced and Damped Oscillations

Edit
Assertion-Reason▾

### Assertion (Ꭺ)

Damping decreases the time period of oscillation of a simple pendulum.

### Reason (Ꭱ)

Damped oscillation implies loss of energy.

### Choices

Choice (4) Response

a.

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

b.

Ꭺ is true but Ꭱ is 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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