# Oscillations and Waves (KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 15 - 18 of 27

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## Question number: 15

» Oscillations and Waves » Standing Waves in Strings and Organ Pipes

Appeared in Year: 2012

MCQ▾

### Question

A standing wave in a pipe with a length L = 1.2 m is described y,

Based on above information, which one of the following statement is incorrect?

(Speed of sound in air is 300 ms-1)

### Choices

Choice (4) Response

a.

The frequency of the fundamental mode of vibrations is 137.5 Hz

b.

There could be a nods at and antinode at

c.

A pipe is closed at both ends

d.

The wavelength of the wave could be 0.6 m

## Question number: 16

» Oscillations and Waves » Simple Pendulum

MCQ▾

### Question

The bob of a simple pendulum executes simple harmonic motion in water with a period t, while the period of oscillation of the bob is t0 in air. Neglecting frictional force of water and given that the density of the bob is . What relationship between t and t0 is true?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 17

» Oscillations and Waves » Simple Pendulum

MCQ▾

### Question

The breaking strength of thread of a simple pendulum, whose bob has mass m, is 2 mg. What is the maximum angular amplitude that can be given to the pendulum?

### Choices

Choice (4) Response

a.

520

b.

600

c.

480

d.

400

## Question number: 18

» Oscillations and Waves » Simple Pendulum

MCQ▾

### Question

The breaking strength of thread of a simple pendulum, whose bob has mass m, is 4 mg. What is the maximum angular amplitude that can be given to the pendulum?

### Choices

Choice (4) Response

a.

450

b.

600

c.

700

d.

300

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