Physics 9th, Ch# 01 Complete Total Marks: 20
Q. No: 1 Encircle the correct answer from the
given choices:
1)
5000 g =
(a) 5
µ g (b)
5 K g (c) 5 n g (d) 5 M g
2)
2000 000 W =
(a) 2
µ W (b)
2 K W (c) 2 n W (d) 2 M W
3)
The number of base units in SI are:
(a) 3 (b) 6 (c) 7 (d) 9
4)
Which one of the following units is not a
derived unit?
(a)
pascal (b)
kilogramme (c)
newton (d)
watt
5)
Amount of a substance in terms of numbers
is measured in:
(a) gram
(b)
kilogramme (c)
newton (d)
mole
6)
An interval of 200 µs
is equivalent to
(a) 0.2 s (b)
0.02 s (c)
2x10-4 s (d)
2x10-6 s
7)
Which one of the following is the
smallest quantity?
(a)
0.01 g (b)
2 mg (c)
100 µ g (d)
5000 ng
8)
Which instrument is most suitable to
measure the internal diameter of a test tube?
(a) metre rule (b) Vernier
Calipers (c)
measuring tap (d) screw gauge
9)
6400 km =
(a) 6.4x10-3 km (b) 6.4x10-5
km (c) 6.4x10-2 km (d) 6.4x10-1 km
10) A
measuring cylinder is used to measure:
(a) mass (b) area (c) volume (d)
level of a liquid
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Q.no: 2; Your
hair grows at the rate of 1 mm per day. Find their growth rate in nm s-1 (5) |
Q.no:
3; A chocolate wrapper is 6.7 cm long and 5.4 cm wide. Calculate its
area up to a reasonable number of significant figures. (5)
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