# Oscillations and Waves (NEET (NTA-National Eligibility cum Medical Entrance Test) Physics): Questions 133 - 136 of 195

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## Question number: 133

» 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.

in the forward direction

b.

in the backward direction

c.

in the forward direction

d.

in the backward direction

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## Question number: 134

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

MCQ▾

### Question

Three masses 600g, 300g, and 200g are suspended at the end of a spring are in equilibrium. When the 600g mass is removed, the system oscillates with a period of 4 seconds, when the 300 gm mass is also removed, it will oscillate with a period of

### Choices

Choice (4) Response

a.

2 s

b.

1 s

c.

d.

2.53 s

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## Question number: 135

» Oscillations and Waves » Speed of a Wave

MCQ▾

### Question

A man is standing between two parallel cliffs and fires a gun. If he hears first and second echoes after 1.5 s and 3.5s respectively, the distance between the cliffs is (Velocity of sound in air = 340 ms -1)

### Choices

Choice (4) Response

a.

510 m

b.

850 m

c.

595 m

d.

1190 m

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## Question number: 136

» Oscillations and Waves » Displacement Relation for a Progressive Wave

MCQ▾

### Question

The equation of a progressive wave is given by where x and y are in meter and t is in second. The velocity of the wave is,

### Choices

Choice (4) Response

a.

b.

c.

d.

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