NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 11 - 15 of 2247

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Question number: 11

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MCQ▾

Question

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

Choices

Choice (4) Response

a.

[M 0 L 2 T -2]

b.

[M 0 L 2 T -1]

c.

[M L -2 T -2]

d.

[M L -2 T -3]

Question number: 12

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MCQ▾

Question

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

Choices

Choice (4) Response

a.

3x

b.

2x

c.

4x

d.

x

Question number: 13

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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.

0.2%

b.

0.1%

c.

0.8%

d.

1%

Question number: 14

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MCQ▾

Question

A point moves with uniform acceleration and V1, V2 and V3 denote the average velocities in the three successive intervals of time t1, t2 and t3. Which of the following relations is correct?

Choices

Choice (4) Response

a.

(V1 – V2) / (V2 – V3) = (t1 – t2) / (t2 + t3)

b.

(V1 – V2) / (V2 – V3) = (t1 + t2) / (t2 + t3)

c.

(V1 – V2) / (V2 – V3) = (t1 – t2) / (t2 - t3)

d.

All of the above

Question number: 15

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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.

7: 9

b.

16: 25

c.

4: 5

d.

13: 17

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