Download App

Measurement and Experimentation — PHYSICS STD 9 — Question

ICSE BoardEnglish MediumSTD 9PHYSICSMeasurement and Experimentation3 Marks
Question
(a) Define mass.
(b) State the units in which mass is measured in (1) C.GS. system (2) S.I. system.
(c) Name the most convenient unit of mass you will use to measure :
1. Mass of small amount of a medicine.
2. The grain output of a state
3. The bag of sugar
4. Mass of a cricket ball.
✓

Answer

(a) Mass: The quantity of matter contained in a body is known as its mass.
(b) In C.GS. system, mass is measured in gram. In S.I. system, mass is measured in Kilogram.
(c) (i) Microgram $(\mu g )$.
(ii) Tonne ( $t$ )
(iii) Quintal ( $\mu t$ )
(iv) Gram (g)
Note : 1 microgram $=10^{-6} g=10^{-9} kg$ 1 Tonne $=1000 kg ; 1$ Quintal $=100 kg$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[3 Mark Question Answer]" from Measurement and Experimentation→Measurement and Experimentation — all question types→PHYSICS STD 9 question papers→ICSE Board STD 9 question papers→ICSE Board question paper generator→

Similar questions

Draw a neat diagram of a simple pendulum. Show on it the effective length of the pendulum and its one oscillation .
→
Why do automobile drivers prefer convex mirror as a rear view mirror? Illustrate your answer.
→
The following figure shows a metal rod PQ mounted on an insulated stand. The cap of an uncharged electroscope touches one end Q of the metal rod. A negatively charged ebonite rod is brought near the other end P of the metal rod.
(a) What charge does the end P have?
(b) What charge does the end Q have?
(c) What charge does the cap of the electroscope have?
(d) What charge does the gold leaf have?
(e) Will the leaf diverge or collapse? Give reason.
(f) If the electroscope is now earthed, what charge does the metal rod have?
→
A ball is thrown up with a speed of $4.9 ms^{-1}.$
Prove that the time of ascent is equal to the time of descent.
→
A solid weighs 2.10 N in air. It has a relative density of 8.4. How much will the body weigh if placed: In a liquid of relative density 1.2
→
The mass of a block made of certain material is 13.5 kg and its volume is $15 \times 10^{-3} m^3$.
(a) Calculate upthrust on the block if it is held fully immersed in water.
(b) Will the block float or sink in water when released? Give a reason for your answer.
(c) What will be the upthrust on block while floating?
Take density of water $=1000 kg m ^{-3}$.
→
Which of the following graphs represents a motion with negative acceleration?
→
A piece of metal weighs 44.5 gf in air, 39.5 gf in water. What is the R.D. of the metal?
→
Draw a graph for acceleration against time for a uniformly accelerated motion. How can it be used to find the change in speed in a certain interval of time?
→
A body is moving along a circular path of radius r. What will be the distance and displacement of the body when it completes:
Two full revolutions
→