Solved Physics Questions For University Freshers

Q1. Define the terms Fundamental and derived quantities, giving examples of each
Solution Q1.
Fundamental quantities: These are basic physical quantities. They are so primary in themselves that they require no other quantity to define them e.g Length (distance), Mass, Time, Temperature and current etc.
Derived quantities: These are secondary quantities that define nature. They are secondary in that they depend on other quantities (fundamental quantities) e.g Area, Volume, Density, Acceleration etc
Q2. Convert 450KJ/hr to watts
Solution Q2. Power (Watts) =
Q3 Newton’s law of universal gravitation is given by F = GM1M2
R2
Where F, is the gravitational force of attraction between the masses M1 and M2. Compute the dimension of gravitation G
Solution Q3 F =
G =?
M1M2 = M.M = M2 R2 = L.L =L2
Therefore, G=
G = M-1L3T-2
Q4 From the above equation, compute the unit of G in S.I Units
Solution Q4 G = M3S-2Kg-1 Or Kg-1M3S-2