Oscillations and Waves (NEET Physics): Questions 188 - 192 of 192

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 188

» Oscillations and Waves » Doppler Effect in Sound

MCQ▾

Question

An observer is moving away from source of sound of frequency 100 Hz. His speed is 33 m/s. If speed of sound is 330 m/s, then the observed frequency is

Choices

Choice (4) Response

a.

90 Hz

b.

91 Hz

c.

100 Hz

d.

110 Hz

Question number: 189

» Oscillations and Waves » Doppler Effect in Sound

MCQ▾

Question

A whistle giving out 450 Hz approaches a stationary observer at a speed of 33 m/s. The frequency heard by the observer in Hz is

Choices

Choice (4) Response

a.

409

b.

517

c.

429

d.

500

Question number: 190

» Oscillations and Waves » Harmonics

MCQ▾

Question

A standing wave having 3 nodes and 2 antinodes is formed between two atoms having a distance 1.21 A between them. The wavelength of the standing wave is

Choices

Choice (4) Response

a.

6.05 Å

b.

1.21 Å

c.

2.42 Å

d.

3.63 Å

Question number: 191

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

Appeared in Year: 2016

MCQ▾

Question

A body of mass m is attached to the lower end of a spring whose upper end is fixed. The spring has negligible mass. When the mass m is slightly pilled down and released, it oscillates with a time period of 3s . When the mass m is increased by 1 kg, the time period of oscillation becomes 5s . The value of m in kg is:

Choices

Choice (4) Response

a.

43

b.

169

c.

916

d.

34

Question number: 192

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

Appeared in Year: 2016

MCQ▾

Question

The second overtone of an open organ pipe has the same frequency as the first overtone of a closed pipe L meter long. The length of the open pipe will be –

Choices

Choice (4) Response

a.

L

b.

L2

c.

2L

d.

4L

Sign In