# Oscillations and Waves (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 80 - 85 of 195

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## Question number: 80

» Oscillations and Waves » Wave Motion

MCQ▾

### Question

A tuning fork makes 256 vibrations per second in air. When the velocity of sound is 330 m/s then wavelength of the tone emitted is

### Choices

Choice (4) Response

a.

0.89 m

b.

1.11 m

c.

0.56 m

d.

1.29 m

## Question number: 81

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

MCQ▾

### Question

A ball of the mass 10 kg hangs from a spring and oscillates with time period of 2 π seconds. If the ball is removed the spring shortens by,

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 82

» Oscillations and Waves » Simple Harmonic Motion » Phase

MCQ▾

### Question

The path difference between the two waves and is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 83

» Oscillations and Waves » Longitudinal and Transverse Waves

MCQ▾

### Question

In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacement is 0.130 second. The frequency of the wave is,

### Choices

Choice (4) Response

a.

2.47 Hz

b.

1.785 Hz

c.

1.73 Hz

d.

1.92 Hz

## Question number: 84

» Oscillations and Waves » Periodic Functions

MCQ▾

### Question

The minimum, possible time period

### Choices

Choice (4) Response

a.

0.3 sec.

b.

0.4 sec.

c.

0.2 sec.

d.

0.1 sec

## Question number: 85

» Oscillations and Waves » Simple Pendulum

Assertion-Reason▾

### Assertion (Ꭺ)

given The percentage change in time period is 1.5 % if the length of simple pendulum increases by 3

### Reason (Ꭱ)

Time period is directly proportional to length of pendulum

### Choices

Choice (4) Response

a.

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

b.

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

c.

Ꭺ is true but Ꭱ is false

d.

Ꭺ is false but Ꭱ is true

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