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Physics 9 Chapter 1 - Physical Quantities and Measurements - 17
1.
What is the relative size of an animal cell?
a) 100 micrometre
b) 1 micrometre
c) 10 micrometre
d) 1 millimetre
2.
What is the relative size of a plant cell?
a) 1 millimetre
b) 10 micrometre
c) 100 micrometre
d) 1 micrometre
3.
What is the first step in working of screw gauge?
a) Find zero error
b) Fix the object in the spindle and stud
c) Apply zero correction
d) Find the diameter of the object
4.
If zero of circular scale coincides with the index line, then the zero error will be.......................?
a) Positive
b) Zero
c) Negative
d) None of these
5.
Zero error will be ..................if zero of circular scale is behind the index line?
a) Negative
b) Zero
c) -0.10
d) Positive
6.
Zero error will be .................. if zero of circular scale has crossed the index line?
a) Positive
b) Negative
c) -0.10
d) Zero
7.
What is the zero error if 18th division on circular scale is behind the index line?
a) +0.18 mm
b) -0.02 mm
c) +0.02 mm
d) -0.18 mm
8.
What is the zero error if 5 divisions on circular scale have crossed the index line?
a) +0.05 mm
b) -0.10 mm
c) -0.05 mm
d) +0.10 mm
9.
By which of the following the measurements taken will be more precise?
a) Vernier callipers
b) Metre rule
c) Screw gauge
d) Measuring tape
10.
In ancient times what was used to measure grain in various part of the world?
a) Electronic balance
b) Lever balance
c) Physical balance
d) Pots
11.
Which of the following balances are in most sweet and grocery shop?
a) Physical balance
b) Lever balance
c) Electronic balance
d) Beam balance
12.
Which of the following balance is more precise?
a) Electronic balance
b) Physical balance
c) Beam balance
d) Lever balance
13.
Which of the following balance is used in laboratory?
a) Physical balance
b) Lever balance
c) Beam balance
d) Electronic balance
14.
Physical balance consists of a ...................resting at the centre on a fulcrum?
a) Plumb line
b) Pan
c) Beam
d) Lever
15.
Beam is balanced if the pointer of physical balance is at....................?
a) Five
b) End point
c) Zero
d) Beginning point
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