Tamil Nadu (English Medium) Std 9 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
Force of gravity on a body is called

(A) Density	(B) Weight
(C) Pressure	(D) Acceleration

Question-2
Name a device used to measure the short time intervals?

(A) Wrist watch	(B) Stop watch
(C) Screw gauge	(D) Vernier caliper

Question-3
Which instrument in measuring time, consisting of two glass chambers connected by a narrow neck and containing a quantity of sand?

(A) Sundial	(B) Mechanical clock
(C) Atomic clock	(D) Sand clock

Question-4
The most accurate time measurement device is:

(A) Quartz clock	(B) Electrical Oscillators
(C) Caesium - atomic clock	(D) Seconds Pendulum

Question-5
Micrometer screw gauge is used to measure very small objects to

(A) 1 cm	(B) 0.1 cm
(C) 0.01 cm	(D) 0.001 cm

Question-6
What is the SI unit of weight?

(A) Newton	(B) Kilogram
(C) Joule	(D) Pascal

Question-7
Which of the following is the SI unit for length?

(A) Centimetre	(B) Metre
(C) Kilometre	(D) Mile

Question-8
Which of the following instrument is more accurate in taking measurements?

(A) Vernier calipers	(B) Digital vernier calipers
(C) Metre scale	(D) Ordinary scale

Question-9
Which of the following instrument is used for measuring weight ?

(A) Spring balance	(B) Two pan balance
(C) Physical balance	(D) Vernier caliper

Question-10
Which of the following is used to measure the distance of a star from the earth?

(A) Kilometer	(B) Hectometer
(C) Light year	(D) None of these

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Std 9

Tamil Nadu (English Medium)

Practice in Related Chapters
Motion and Liquids
Sound
Work, Power, Energy and Heat
Measuring Instrument