# Oscillations and Waves (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 96 - 99 of 195

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## Question number: 96

» Oscillations and Waves » Principle of Superposition of Waves

MCQ▾

### Question

If two waves of same frequency and same amplitude on superimposition produced a resultant disturbance of the same amplitude, the waves differ in phase by

### Choices

Choice (4) Response

a.

Zero

b.

c.

d.

## Question number: 97

» Oscillations and Waves » Periodic Motion - Period Frequency

MCQ▾

### Question

The time period of a simple pendulum of length 2 L as measured in an elevator descending with acceleration g / 3 is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 98

» Oscillations and Waves » Displacement Relation for a Progressive Wave

MCQ▾

### Question

Two blocks A and B each of mass m are connected by a massless spring of natural length L and spring constant k. The blocks are initially resting on a smooth horizontal floor with the spring at its natural length. A third identical block C also of mass m moves on the floor with a speed v along the line joining A and B and collides with A. Then

(1) The kinetic energy of the A - B system at maximum compression of the spring is

(2) The maximum compression of the spring is

(3) The kinetic energy of the A – B system at maximum compression of the spring is zero.

(4) The maximum compression of the spring is

Select the correct answers and mark it according to the following codes:

### Choices

Choice (4) Response

a.

1 and 3 are correct

b.

1,2 and 3 are correct

c.

2 and 4 are correct

d.

1 and 2 are correct

## Question number: 99

» Oscillations and Waves » Resonance

MCQ▾

### Question

Amplitude of a wave is represented by . Then resonance will occur when

### Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

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