# Physics and Measurement (NEET (NTA-National Eligibility cum Medical Entrance Test) Physics): Questions 50 - 55 of 62

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## Question number: 50

» Physics and Measurement » Errors in Measurement

MCQ▾

### Question

The mean time period of second’s pendulum is 2.00s and means absolute error in the time period is 0.05s. To express maximum estimate of error, the time period should be written as

### Choices

Choice (4) Response

a.

(2.00 + 0.025) s

b.

(2.00 + 0.05) s

c.

(2.00 - 0.01) s

d.

None of the above

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## Question number: 51

» Physics and Measurement » SI Units

MCQ▾

### Question

Wavelength of ray of light is 0.00006 m. It is equal to

### Choices

Choice (4) Response

a.

600 microns

b.

60 microns

c.

0.6 microns

d.

6 microns

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## Question number: 52

» Physics and Measurement » Errors in Measurement

MCQ▾

### Question

A physical quantity P is given by P =

. The quantity which brings in the maximum percentage error in P is

### Choices

Choice (4) Response

a.

D

b.

B

c.

A

d.

C

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## Question number: 53

» Physics and Measurement » Dimensions of Physical Quantities

MCQ▾

### Question

What are the dimensions of permeability (µ 0) of vacuum?

### Choices

Choice (4) Response

a.

[M L T -2 I -2]

b.

[M L T -2 I 2]

c.

[M L -1 T -2 I 2]

d.

[M L -1 T -2 I -2]

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## Question number: 54

» Physics and Measurement » Dimensions of Physical Quantities

MCQ▾

### Question

In S = a + bt + ct 2, S is measured in meters and t in seconds. The unit of c is

### Choices

Choice (4) Response

a.

ms -2

b.

m

c.

ms -1

d.

None of the above

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## Passage

Three of the fundamental constants of physics are the universal gravitational constant, G = 6.7 x 10 -11 m 3 kg -1 s -2, the speed of light, c = 3.0 x 10 8 m/s, and Planck’s constant,

h = 6.6 x 10 -34 kg m 2 s -1.

## Question number: 55 (1 of 2 Based on Passage) Show Passage

» Physics and Measurement » Dimensions of Physical Quantities

MCQ▾

### Question

The energy of a photon is given by E = If λ = 4 x 10 - 7 m, the energy of photon is

The universal gravitational constant, G = 6.7 x 10 -11 m 3 kg -1 s -2, the speed of light, c = 3.0 x 10 8 m/s, and Planck’s constant, h = 6.6 x 10 -34 kg m 2 s -1.

### Choices

Choice (4) Response

a.

4.5 eV

b.

2.10eV

c.

3.0 eV

d.

3.95 eV

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