Oscillations and Waves (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 14 - 16 of 195

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Question number: 14

» Oscillations and Waves » Displacement Relation for a Progressive Wave

MCQ▾

Question

Two blocks A and B each of mass m are connected by a massless spring of natural length L and spring constant k. The blocks are initially resting on a smooth horizontal floor with the spring at its natural length. A third identical block C also of mass m moves on the floor with a speed v along the line joining A and B and collides with A. Then

(1) The kinetic energy of the A - B system at maximum compression of the spring is Equation

(2) The maximum compression of the spring is Equation

(3) The kinetic energy of the A – B system at maximum compression of the spring is zero.

(4) The maximum compression of the spring is 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 and 3 are correct

c.

1 and 2 are correct

d.

1, 2 and 3 are correct

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Question number: 15

» Oscillations and Waves » Simple Pendulum

MCQ▾

Question

If a simple pendulum oscillates with an amplitude of 50 mm and time period of 2 sec, then its maximum velocity is,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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Question number: 16

» Oscillations and Waves » Simple Pendulum

MCQ▾

Question

A simple pendulum is set up in a trolley which moves to the right with an acceleration a on a horizontal plane. Then the thread of the pendulum in the mean position makes an angle θ with the vertical is

Choices

Choice (4) Response

a.

Equation in the backward direction

b.

Equation in the backward direction

c.

Equation in the forward direction

d.

Equation in the forward direction

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