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

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Question number: 1

» Oscillations and Waves » Free Forced and Damped Oscillations

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) Equation

(2) Equation

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

(4) Equation

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

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) Equation

(2) Equation

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

(4) Equation

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

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

1 and 2 are correct

c.

2 and 4 are correct

d.

1, 2 and 3 are correct

Question number: 3

» Oscillations and Waves » Free Forced and Damped Oscillations

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.

Ꭺ is true but Ꭱ is false

b.

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

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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