# NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 1777 - 1781 of 2142

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## Question number: 1777

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

## Question number: 1778

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: 1779

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: 1780

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: 1781

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.

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