Oscillations and Waves-Reflection of Waves (NEET Physics): Questions 1 - 3 of 3

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Question number: 1

» 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

Question number: 2

» Oscillations and Waves » Reflection of Waves

Assertion-Reason▾

Assertion (Ꭺ)

Velocity of particles, while crossing mean position (in stationary waves) varies from maximum at antinodes to zero at nodes.

Reason (Ꭱ)

Amplitude of vibration at antinodes is maximum and at nodes, the amplitude is zero, and all particles between two successive nodes cross the mean position together.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 3

» Oscillations and Waves » Reflection of Waves

Assertion-Reason▾

Assertion (Ꭺ)

In the case of a stationary wave, a person hears a loud sound at the nodes as compared to the antinodes.

Reason (Ꭱ)

In a stationary wave all the particles of the medium vibrate in phase.

Choices

Choice (4) Response

a.

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

b.

Ꭺ is false but Ꭱ is true

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

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