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9th Physics (English Medium-ALP)
Chapter No. 1:
Physical Quantities and Measurement
- Choose the correct answer from the following choices:
- The number of base unit is SI is.(SW 14-I) (BP, FB 15-II) (LHR 08-II) (LHR, AK 13-II)
(a) 3 (b) 6 (c) 7 (d) 9
- Which one of the following units is not a derived unit?
(SG, LHR 14-I) (RWP 13-II) (GW 10-I) (AK 15-I) (DG 15-II)
(a)pascal (b) kilogram (c) newton (d) watt
iii. Amount of a substance in terms of numbers is measured in.
(DG 13-I) (SG, DG 14-I) (FB 15-I)
(a)gram (b) kilogram (c) newton (d) mole
- An interval of 200 s is equivalent to. (SW 14-II) (RWP 13-I)
(a) 0.2s (b) 0.02s (c) 2 Í 10-4s (d) 2 Í 10-6s
- Which one of the following is the smallest quantity?
(LHR, MN 14-II) (GW 13-II) (BP 14-I) (MN 15-I)
(a)0.01g (b) 2mg (c) 100 g (d) 5000ng
- Which instrument is most suitable to measure the internal diameter of a test tube?
(BP 14-II) (SG 13-II) (DG 14-I)
(a)metre rule (b)vernierCallipers (c) measuring tap (d) screw Guage
vii. A student claimed the diameter of a wire as 1.032cm using Vernier Callipers. Up to what extent do you agree with it?
(a) 1cm (b) 1.0cm (c) 1.03cm (d) 1.032cm
viii. Significant figures in an expression are.
(a)all the digits (b) all the accurately known digits
(c)all the accurately known digits and the first doubtful digit
(d)all the accurately known and the doubtful digits
ANSWER:
| i. |
c. |
ii. |
b. |
iii. |
d. |
iv. |
c. |
v. |
d. |
| vi. |
b. |
vii. |
c. |
viii. |
c. |
|
