Physics and Measurement (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 25 - 30 of 62

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Question number: 25

» Physics and Measurement » Dimensions of Physical Quantities

MCQ▾

Question

X = 3YZ 2 find dimensions of Fin (MKSA) system, if X and Z are the dimensions of capacity and magnetic field respectively

Choices

Choice (4) Response

a.

[M -3 L -2 T -4 A -1]

b.

[M -3 L -2 T 8 A 4]

c.

[M -3 L -2 T 4 A 4]

d.

[M L -2]

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Question number: 26

» Physics and Measurement » Dimensions of Physical Quantities

MCQ▾

Question

Number of particles crossing unit area perpendicular to X-axis in unit time is given by n =-D n 2 - n 1 x 2 - x 1

, where n1 and n2 are number of particles per unit volume in the position x1 and x2. Find dimensions of D called as diffusion constant.

Choices

Choice (4) Response

a.

[M 0 L T 2]

b.

[M0 L2 T -4]

c.

[M 0 L 2 T -1]

d.

[M 0 L T -3]

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Question number: 27

» Physics and Measurement » Accuracy and Precision of Measuring Instruments

MCQ▾

Question

A wire has a mass 0.3 + 0.003g, radius 0.5 + 0.005 mm and length 6 + 0.06 cm. The maximum percentage error in the measurement of its density is

Choices

Choice (4) Response

a.

1

b.

4

c.

2

d.

3

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Question number: 28

» Physics and Measurement » SI Units

MCQ▾

Question

What is the relationship between dyne and newton of force?

Choices

Choice (4) Response

a.

l dyne = 107 newton

b.

1 dyne = 10-7 newton

c.

l dyne = 105 newton

d.

1 dyne = 10 - 5 newton

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Question number: 29

» Physics and Measurement » Technology and Society

MCQ▾

Question

Which of the following pairs is wrong?

Choices

Choice (4) Response

a.

Temperature-Thermometer

b.

Pressure-Barometer

c.

Relative density-Pyrometer

d.

Earthquake-Seismograph

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Question number: 30

» Physics and Measurement » SI Units

MCQ▾

Question

SI unit of permittivity is

Choices

Choice (4) Response

a.

C 1 m 2 N -2

b.

C 2 m 2 N 2

c.

C 2 m 2 N -2

d.

C 2 m -2 N -1

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