Question

A mark
16
D. Match the items of column A & B :
(i) luminous intensity
(ii) common balance 3
(iii) 10-15 m
(iv) measurement of short duration of time.
1 mark
apan
(a) femtometre
(b) stop watch
(c) mass
(d) candela
E Very short answer type questions:
(a) What must be mentioned in the result obtained after measuring a
physical quantity
2.1
2.
n
common in all the systems of units ? (c) Classify - displacement, force, length, temperature, time, volume
from a number ? b) What are the different systems of units ? Which among the fundamental units
weight, density, momentum, pressure and mass into fundamental and derived quantities
(d) Which of the following are physical quantities and which are not ? – water, energy, work, speed,
YEL Which physical quantity is normally measured with a common balance ? (g) Give one example for
rupee-coin, book, density. (e) What are the SI units of temperature, force, density, speed and momentum
of the derived physical quantities having one, two and three fundamental physical quantitie, p
(h) Name the suitable units which should be chosen to measure (1) distance between two cities, (2) masso
should be used to measure the volume of a lump of sugar candy with the help of a measuring cylinder. And
a small grain, (3) wavelength of a colour of light, (4) distance between two stars. (i) Name a liquid that
three fundamental quantities. Write their dimensional formulae. (Ans. work, force; ML-T2, MLT "I'm
but no dimension. (l) Name a scalar quantity and a vector quantity, both of which are derived using all
1 the
Acetone]. \47 What is the dimension of a physical quantity? (k) Name a physical quantity which has
3 mar
the unit of volume fundamental or derived ?
F. Broad answer type questions:
physical quantities have units ? 2. Why are several u​

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