# NEET Physics: Questions 11 - 15 of 2142

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## Question number: 11

MCQ▾

### Question

The dimensional formula for Planck’s constant (h) is

### Choices

Choice (4) Response

a.

[M 0 L 2 T -1]

b.

[M 0 L 2 T -2]

c.

[M L -2 T -2]

d.

[M L -2 T -3]

## Question number: 12

MCQ▾

### Question

A particle starts moving from the position of rest under a constant ace. If it covers a distance x in t second, what distance will it travel in next t second?

### Choices

Choice (4) Response

a.

x

b.

2x

c.

3x

d.

4x

## Question number: 13

MCQ▾

### Question

The period of oscillation of a simple pendulum is given by T = 2π

where l is about 100 cm and is known to have l mm accuracy. The period is about 2s. The time of 100 oscillations is measured by a stopwatch of least count 0.1s. The percentage error in g is

### Choices

Choice (4) Response

a.

0.8%

b.

0.1%

c.

1%

d.

0.2%

## Question number: 14

MCQ▾

### Question

A point moves with uniform acceleration and V 1, v 2 and v 3 denote the average velocities in the three successive intervals of time t 1, t 2 and t 3. Which of the following relations is correct?

### Choices

Choice (4) Response

a.

(V 1 – V 2) / (V 2 – V 3) = (t 1 + t 2) / (t 2 + t 3)

b.

(V 1 – V 2) / (V 2 – V 3) = (t 1 – t 2) / (t 2 + t 3)

c.

(V 1 – V 2) / (V 2 – V 3) = (t 1 – t 2) / (t 2 - t 3)

d.

None of the above

## Question number: 15

MCQ▾

### Question

What will be the ratio of the distances moved by a freely falling body from rest in 7th and 9th seconds of journey?

### Choices

Choice (4) Response

a.

13: 17

b.

4: 5

c.

7: 9

d.

16: 25

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