Why is a Vernier caliper used in measurements?

A. For greater accuracy in measurement

B. For measuring temperature only

C. For measuring large distances only

D. For measuring time intervals

Everyday Science · Physics in Everyday Life · page 1 of 5

Important Scientific (125) MCQs with Answers

Includes 5 past paper MCQs (marked).

Timed quizzes, instant results, track your progress — free

Practice these MCQs in the app

All Everyday Science chapters

Important Scientific Instruments MCQs (1–10)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

Answers and one-liners are hidden. Tap an option to check that question, or show all.

1.
Past Paper MCQ
The least count of Vernier caliper is _?
Correct Answer: C. 0.2 mm
One-liner
The least count of a Vernier caliper is 0.2 mm (or 0.02 cm).
2.
What does an ammeter measure?
Correct Answer: B. Current in amperes
One-liner
An ammeter measures current in amperes.
3.
Which one of the following cannot be measured with an Avometer?
Correct Answer: D. Inductance
One-liner
An Avometer (multimeter) can measure current, voltage, and resistance but cannot measure inductance.
4.
The dead time of GM counter is?
Correct Answer: B. 10⁻⁴ seconds
One-liner
The dead time of a GM (Geiger-Müller) counter is approximately 10⁻⁴ seconds (100 microseconds).
5.
A _ meter is used as a null detector in a Wheatstone bridge.
Correct Answer: A. Galvanometer
One-liner
A Galvanometer is used as a null detector in a Wheatstone bridge.
6.
Why is a Vernier caliper used in measurements?
Correct Answer: A. For greater accuracy in measurement
One-liner
A Vernier caliper is used in measurements for greater accuracy in measurement, as it can measure lengths up to a precision of 0.1 mm or better.
7.
The device which can be used for precise measurement of wavelength is?
Correct Answer: C. Michelson Interferometer
One-liner
The device used for precise measurement of wavelength is the Michelson Interferometer.
8.
Which instrument is used to measure time precisely in a lab?
Correct Answer: B. Stopwatch
One-liner
A stopwatch is the instrument used to measure time precisely in a laboratory setting.
9.
What is measured by an ammeter?
Correct Answer: B. Electric current
One-liner
An ammeter measures electric current.
10.
Instrument that is used to measure small length with more accuracy is _?
Correct Answer: C. Screw gauge
One-liner
A screw gauge (micrometer screw gauge) is used to measure small lengths with high accuracy, typically up to 0.01 mm or 0.001 cm.

Previous chapter: Methods of Electric Energy Production Next chapter: List of SI Units

Important Scientific (125) MCQs with Answers

Important Scientific Instruments MCQs (1–10)

Subjects

Exams

Platform

Legal