Chapter - 2 Measurement - Test 2

1. Least count of stopwatch is 1 sec

1) True
2) False
2. Mass is measured with the help of vernier calipers.

1) False
2) True
3. The random error in due to unknown reasons

1) True
2) False
4. there are 20 vernier divisions on the vernier scale then the least count will be
1) 0.01 mm
2) 0.05 mm
3) 0.05 cm
4) 0.01 cm
5. The distance traveled by light in vacuum during a time interval of 1/299,792,458 th of a Second is called
1) Kilometer
2) Millimeter
3) Meter
4) Centimeter
6. If the length, breadth and width of a rectangular block are 3cm, 4 cm and 5 cm respectively then the volume is
1) 60 m3
2) 60 cm
3) 60 cm3
4) 12 cm 3
7. Which one of the following is a derived unit

1) M2
2) kg
3) Kelvin
4) Mole
8. 0.1 mm= ________

1) 0.001 cm
2) 0.01 mm
3) 0.01 cm
4) None of the above
9. The number 146.7 in scientific notation is written as

1) 1.467
2) 14.67
3) 1.467x102
4) 1467x10-2
10. Density of substance is given by the relation

1) m/d
2) d/v
3) V/d
4) m/v
11. Let the volume of a liquid in a measuring cylinder is 20 ml More liquid is poured into it so that the liquid surface reaches to 65 ml then
1) volume of liquid is 65 ml
2) volume of liquid is 45 k
3) volume of liquid is 65 gram
4) volume of liquid is 45 ml
12. There are 5 smallest subdivisions to a second in a stop watch. It least count is
1) 5 sec
2) 0.01 sec
3) 0.025 sec
4) 0.02 sec
13. Pitch / No of circular division =

1) Volume
2) sub multiple
3) Least count
4) Least multiple
14. The duration in which 9,192,631,770 vibrations are completed by the Cs-133 atom is called

1) Meter
2) Second
3) Hour
4) Minute
15. 1 - sec = ___sec

1) 106
2) 103
3) 10-6
4) 10-3
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