Physics and Measurement (NEET Physics): Questions 34 - 38 of 61

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Question number: 34

» Physics and Measurement » Dimensions of Physical Quantities

MCQ▾

Question

The frequency of vibration of string is given by v = P2l [Fm] 1/2 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 0 T -1]

b.

[M L -1 T 0]

c.

[M 0 L T -1]

d.

[M 0 L 0 T 0]

Question number: 35

» 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: 36

» Physics and Measurement » Accuracy and Precision of Measuring Instruments

MCQ▾

Question

The number of significant figures in all the given numbers 25.12, 2009, 4.156 and l. 217 x 10 - 4 is

Choices

Choice (4) Response

a.

2

b.

3

c.

4

d.

1

Question number: 37

» Physics and Measurement » SI Units

MCQ▾

Question

10 the unit of Stefan’s constant a is

Choices

Choice (4) Response

a.

Wm 2 K -4

b.

Wm -2 K 4

c.

Wm -2 K -4

d.

Wm -2 K -1

Question number: 38

» 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) %

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