Oscillations and Waves (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 135 - 139 of 195

Visit this page to view all the question topics

To view these problems with solutions proceed here and click "Subscribe Now".

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

To view these problems with solutions proceed here and click "Subscribe Now".

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.

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 137

» Oscillations and Waves » Displacement Relation for a Progressive Wave

MCQ▾

Question

The relation between time and displacement for two particles is given by

,

The ratio of the intensities of the waves produced by the vibrations of the two particles will be

Choices

Choice (4) Response

a.

1: 9

b.

9: 1

c.

1: 2

d.

2: 1

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 138

» Oscillations and Waves » Reflection of Waves

Assertion-Reason▾

Assertion (Ꭺ)

Sound from a tuning fork is louder when its stem is placed on a desktop

Reason (Ꭱ)

When a wave reaches another denser medium some part of it is reflected.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 139

» Oscillations and Waves » Wave Motion

MCQ▾

Question

A wave of frequency 500 Hz has velocity 360 m/sec. The distance between two nearest points 60° out of phase, is

Choices

Choice (4) Response

a.

12 cm

b.

60 cm

c.

120 cm

d.

0.6 cm

To view these problems with solutions proceed here and click "Subscribe Now".