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Class 9 Physics — Online Test

Chapter 1: Physical Quantities and Measurement

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📋 Instructions: Select one answer for each question, then click Submit Test at the bottom to see your score and correct answers.

Q1 Which of the following is a base quantity?

Speed Force Length Area

Q2 The SI unit of mass is:

Gram Pound Kilogram Newton

Q3 Which instrument is used to measure the diameter of a wire?

Meter rule Vernier caliper Screw gauge Measuring tape

Q4 How many base units are there in the SI system?

5 6 7 8

Q5 The least count of a vernier caliper is:

0.01 mm 0.1 mm 1 mm 0.001 mm

Q6 Scientific notation of 0.00045 is:

4.5 × 10² 4.5 × 10⁻⁴ 45 × 10⁻⁵ 4.5 × 10⁴

Q7 Which of the following is a derived quantity?

Mass Time Temperature Velocity

Q8 The SI unit of temperature is:

Celsius Fahrenheit Kelvin Rankine

Q9 Significant figures in 0.00700 are:

6 5 3 2

Q10 One nanometer is equal to:

10⁻⁶ m 10⁻⁷ m 10⁻⁹ m 10⁻¹² m

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