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Detailed Questions and Answers on Physics (8 marks each)
Why do we study physics?
Name any five branches of Physics.
How can you differentiate between base and derived quantities?
Identify the following as base or derived quantity: Density, force, mass, speed, time, length, temperature, and volume.
Name five prefixes most commonly used.
The Sun is one hundred and fifty million kilometers away from the Earth. Write this (a) as an ordinary whole number and (b) in scientific notation.
Write the numbers given below in scientific notation:
What is the least count of the Vernier Callipers?
How many divisions are there on its Vernier scale?
Why do we use zero correction?
What is the least count of a screw gauge?
What is the pitch of your laboratory screw gauge?
What is the range of the two instruments: Vernier Calipers and Screw Gauge, and why?
What is the function of balancing screws in a physical balance?
On which pan do we place the object and why?