Measurements and Experimentation — Important Questions
ICSE · Class 9 · Physics
44 important questions from Measurements and Experimentation for ICSE Class 9 Physics, with answers. Part of the ICSE Class 9 Physics syllabus.
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Important Questions from Measurements and Experimentation
Which of the following are fundamental quantities in SI system?
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Length, Mass, Time, Temperature
Length, mass, time, and temperature are fundamental quantities. Area is a derived quantity (length × length).
The time period of a simple pendulum depends on:
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Length of pendulum, Acceleration due to gravity
Time period T = 2π√(l/g), so it depends only on length (l) and acceleration due to gravity (g). Mass and amplitude do not affect the time period.
1 gram = _____ kilogram
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0.001
1 kilogram = 1000 grams, so 1 gram = 1/1000 kg = 0.001 kg.
The pitch of a screw gauge is 1 mm and it has 100 divisions on the circular scale. What is its least count?
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0.01 mm
Least count = Pitch/Number of divisions = 1 mm/100 = 0.01 mm.
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