Chapter 1: Units and Measurement MCQs | physics Class 11 CBSE

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Chapter 1: Units and Measurement MCQs | physics Class 11 CBSE | ByteNotes.in

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Question 1

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The result of a measurement of a physical quantity is expressed as a number accompanied by a unit. The unit is best described as

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Question 2

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How many base units does the SI system have?

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Question 3

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Which of the following is NOT a SI base unit?

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Question 4

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The SI unit of plane angle is

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Question 5

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The radian and steradian are classified as

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Question 6

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In the CGS system, the base units of length, mass, and time are respectively

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Question 7

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The number 0.002308 m has how many significant figures?

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Question 8

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The number 3.500 cm has how many significant figures?

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Question 9

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Which of the following numbers has the fewest significant figures?

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Question 10

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A length is measured as 4.700 m. After converting to millimetres, the number of significant figures is

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Question 11

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In multiplication or division of measured quantities, the result should have significant figures equal to

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Question 12

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The sum 436.32 g + 227.2 g + 0.301 g, expressed to the correct significant figures, is

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Question 13

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When rounding off 2.745 to three significant figures, the result according to the convention in the chapter is

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Question 14

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The density calculated from mass = 4.237 g and volume = 2.51 cm³ should be reported as

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Question 15

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The order of magnitude of the diameter of the Earth (1.28 × 10⁷ m) is

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Question 16

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The dimensions of force are

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Question 17

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The dimensional formula of mass density is

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Question 18

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Which of the following physical quantities has the dimensional formula [M⁰ L T⁻¹]?

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Question 19

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The principle of homogeneity of dimensions states that

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Question 20

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A dimensionally correct equation is

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Chapter sections

Chapter 1: Units and Measurement | MCQs

The result of a measurement of a physical quantity is expressed as a number accompanied by a unit. The unit is best described as

How many base units does the SI system have?

Which of the following is NOT a SI base unit?

The SI unit of plane angle is

The radian and steradian are classified as

In the CGS system, the base units of length, mass, and time are respectively

The number 0.002308 m has how many significant figures?

The number 3.500 cm has how many significant figures?

Which of the following numbers has the fewest significant figures?

A length is measured as 4.700 m. After converting to millimetres, the number of significant figures is

In multiplication or division of measured quantities, the result should have significant figures equal to

The sum 436.32 g + 227.2 g + 0.301 g, expressed to the correct significant figures, is

When rounding off 2.745 to three significant figures, the result according to the convention in the chapter is

The density calculated from mass = 4.237 g and volume = 2.51 cm³ should be reported as

The order of magnitude of the diameter of the Earth (1.28 × 10⁷ m) is

The dimensions of force are

The dimensional formula of mass density is

Which of the following physical quantities has the dimensional formula [M⁰ L T⁻¹]?

The principle of homogeneity of dimensions states that

A dimensionally correct equation is

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