# Oscillations and Waves (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 140 - 144 of 195

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## Question number: 140

» 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

## Question number: 141

» Oscillations and Waves » Simple Pendulum

MCQ▾

### Question

The length of a second’s pendulum is 7 m. The spherical bob which is empty from inside has a mass of 150 gm. This is now replaced by another solid bob of same radius but having different mass of 100 gm. The new time period will be

### Choices

Choice (4) Response

a.

4.43 sec

b.

2.38 sec

c.

5.30 sec

d.

4 sec

## Question number: 142

» Oscillations and Waves » Periodic Functions

MCQ▾

### Question

The motion of a particle is expressed by the equation , where a is the acceleration, X is the distance from the equilibrium position and b is a constant. The periodic time will be:

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 143

» Oscillations and Waves » Simple Pendulum

MCQ▾

### Question

A pendulum suspended from the ceiling of a train has a period T, when the train is at rest. When the train is accelerating with a uniform acceleration a, the period of oscillation will,

### Choices

Choice (4) Response

a.

Remain unaffected

b.

Decrease

c.

Become infinite

d.

Increase

## Question number: 144

» Oscillations and Waves » Longitudinal and Transverse Waves

Assertion-Reason▾

### Assertion (Ꭺ)

Transverse waves are not produced in liquids and gases.

### Reason (Ꭱ)

Light waves are transverse waves.

### Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

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

c.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is true but Ꭱ is false