Physics and Measurement-Errors in Measurement (NEET Physics): Questions 18 - 22 of 29

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Question number: 18

» 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 = a2b3cd

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%

Question number: 19

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

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.

5 %

c.

8 %

d.

11 %

Question number: 20

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

A physical parameter a can be determined by measuring the parameters b, c, d and e using the relation a = bαcβdγeδ

If the maximum errors in the measurement of b, c, d and e are b1 %, c1 %, d1 %, and e1 %, then the maximum error in the value of a determined by the experiment is

Choices

Choice (4) Response
a.

(b 1 + c 1 - d 1 - e 1) %

b.

(b 1 + c 1 + d 1 + e 1) %

c.

(b 1 + c 1 - d 1 - e 1) %

d.

(b1 + c 1 + d1 + e1) %

Question number: 21

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

If L = 2.331 cm, B = 2.1 cm, then L + B =

Choices

Choice (4) Response
a.

4, 43 cm

b.

4 cm

c.

4.431 cm

d.

4.4 cm

Question number: 22

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

In an experiment, the following observations were recorded: L = 2.820 m, M = 3.00 kg, l = 0.087 cm, Diameter D = 0.041 cm. Taking g = 9.81 m/s2 using the formula, Y =

4MgLπD2l

, the maximum percentage error in Y is

Choices

Choice (4) Response
a.

6.50 %

b.

4.56 %

c.

7.96 %

d.

8.42 %

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