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
Which of the following is used in measuring weight in jewellery shop?

(A) Beam balances	(B) Medical scale
(C) Physical balance	(D) Digital balance

Question-2
Which of the following is the primitive form of a clock which work on the principle of shadow?

(A) Sundial	(B) Sand clock
(C) Digital clock	(D) Solar clock

Question-3
Atomic clock works on periodic vibration taking place in

(A) Uranium atom	(B) Plutonium atom
(C) Carbon atom	(D) Ceasium atom

Question-4
What is the unit of mass?

(A) Gm	(B) Kg
(C) Cm	(D) Mm

Question-5
Which of the following scientist designed the vernier scale?

(A) Albert vernier	(B) Pierre vernier
(C) Newton	(D) Faraday

Question-6
The most accurate time measurement device is:

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

Question-7
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-8
Which of the following is the SI unit for length?

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

Question-9
Mass per unit volume of a substance is known as

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

Question-10
Force of gravity on a body is called

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

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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