# NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 16 - 19 of 2142

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## Question number: 16

MCQ▾

### Question

from the top of a tower, a particle is thrown vertically downwards with a velocity of 10 m/s. The ratio of the distances, covered by it in the 3rd and 2nd seconds of the motion is (Take g = 10m/s2)

### Choices

Choice (4) Response

a.

3: 6

b.

6: 3

c.

5: 7

d.

7: 5

## Question number: 17

Assertion-Reason▾

### Assertion (Ꭺ)

The velocity of a body A relative to the body B is the sum of the velocities of bodies A and B if both travel in opposite direction on a straight line.

### Reason (Ꭱ)

The velocity of a body A relative to the body B is the difference of the velocities of bodies A and B if both travel in opposite direction on a straight line.

### Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

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

c.

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

d.

Ꭺ is false but Ꭱ is true

## Question number: 18

MCQ▾

### Question

A train of 150 meter length is going towards north direction at a speed of 10 m/s. A parrot flies at the speed of 5 m/s towards south direction parallel to the railway track. The time taken by the parrot to cross the train is

### Choices

Choice (4) Response

a.

8 sec

b.

12 sec

c.

10 sec

d.

15 sec

## Question number: 19

MCQ▾

### Question

Which of the following pairs is wrong?

### Choices

Choice (4) Response

a.

Relative density-hydrometer

b.

Earthquake-Seismograph

c.

Temperature-spectrometer

d.

Pressure-Barometer

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