Physics and Measurement [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 32 - 37 of 278

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Question 32

Question MCQ▾

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.

1%

b.

2%

c.

7%

d.

3%

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Question 33

Question MCQ▾

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.

12%

c.

5%

d.

7%

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Question 34

Question MCQ▾

The frequency of vibration of string is given by v = [Fm] Here P is number of segments in the string and l is the length. The dimensional formula for m will be

Choices

Choice (4)Response

a.

[M L-1 T0]

b.

[M L0 T-1]

c.

[M0 L T-1]

d.

[M0 L0 T0]

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Question 35

Question MCQ▾

The percentage errors in the measurement of mass and speed are 2% and 3% respectively. How much will be the maximum error in the estimation of the kinetic energy obtained by measuring mass and speed?

Choices

Choice (4)Response

a.

1%

b.

8%

c.

5%

d.

11%

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Question 36

Question MCQ▾

The number of significant figures in all the given numbers 25.12,2009, 4.156 and 1.217 × 10-4 is

Choices

Choice (4)Response

a.

1

b.

2

c.

3

d.

4

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Question 37

Question MCQ▾

10 the unit of Stefan՚s constant a is

Choices

Choice (4)Response

a.

Wm-2 K-1

b.

Wm-2 K-4

c.

Wm2 K-4

d.

Wm-2 K4

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