# Physics and Measurement (NEET (NTA-National Eligibility cum Medical Entrance Test) Physics): Questions 28 - 33 of 62

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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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## Question number: 31

» Physics and Measurement » Dimensions of Physical Quantities

MCQ▾

### Question

If the time period (T) of vibration of a liquid drop depends on surface tension (S), radius (r) of the drop and density (ρ) of the liquid, then the expression of T is

### Choices

Choice (4) Response

a.

T = k

b.

T = k

c.

T = k

d.

None of the above

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## Question number: 32

» Physics and Measurement » Errors in Measurement

MCQ▾

### Question

Error in the measurement of radius of a circle is 1%. The error in the calculated value of its area is

### Choices

Choice (4) Response

a.

3%

b.

2%

c.

7%

d.

1%

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## Question number: 33

» Physics and Measurement » Errors in Measurement

MCQ▾

### Question

A physical quantity A is related to four observable a, b, c and d as follows, A =

the percentage errors of measurement in a, b, c and d are 1%, 3%, 2 % and 2 % respectively. What is the percentage error in the quantity A?

### Choices

Choice (4) Response

a.

14%

b.

7%

c.

5%

d.

12%

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