Choose the correct options from following and match your answers from key...
1.What happens to gravitational potentialat the centre of the uniform spherical shell which shrinks gradually?
Remains constant
Decreases
Increases
Oscillates
2.A gas is compressed to half of its initial volume isothermally.The same gas is compressed again until the volume reduces to halfthrough an adiabatic process. Then
Work done during isothermal compression is more
Work done is independent of the processes used for compression
Work done is more during adiabatic process
Work done is dependent on the atomicity of the gas
3.Choose the correct statement
A body can be accelerated by frictional force
There can be zero friction
Kinetic energy is greater than rolling friction
Frictional force and area of contact between the two surfaces are proportional
4.Which basic law should be followed to analyse the circuit?
Newton's Law
Faraday's Law
Ampere's law
Kirchoff's law c
5.Which among the following has the maximum penetrating power?
Radio waves
Microwaves
Ultraviolet radiation
Gamma rays
6.for a magnet of a time period T magnetic moment is M.If the magnetic moment becomes one-fourth of the initial value, then the time period of oscillation becomes
Half of the initial value
One-fourth of the initial value
Double of the initial value
Four times the initial value
7.What is the percentage error in the measurement of the kinetic energy of a body, if there is a positive error of 50%in the speed of the body?
125%
30%
50%
100%
8.Polarisation phenomenon explains which nature of light?
Transverse c
Longitudinal
Both transverse and longitudinal
Geometric
9.Who introduces the right-hand rule fro determining the direction of the induced EMF?
Flemming
Lenz
Maxwell
Faraday
10.Boolean algebra is essentially based on
Truth
Logic
Symbol
Numbers
