Physics MCQS with Answers Set 4

The incorrect statement regarding the lines of force of the magnetic field B is

Due to a magnet magnetic lines of force never cut each other

Magnetic intensity is a measure of lines of force passing through unit area held normal to it

Magnetic lines of force form a close curve

Inside a magnet, its magnetic lines of force move from north pole of a magnet towards its south pole

In which of the following states does the incandescent substance give continuous spectrum?

Solid or fluid in plasma state

Vapours in molecular state

Vapours in atomic state

Solid or fluid in bulk state

The nuclear model of atom was proposed by

Neil Bohr

Summerfield

J.J Thomson

E. Rutherford

A point charge Q is placed at the mid-point of a line joining two charges, 4q and q. If the net force on charge q is zero, then Q must be equal to

#NAME?

+4q

#NAME?

-2q

To make the frequency double of an oscillator, we have to

Quadruple the mass

Reduce the mass to one fourth

Half the mass

Double the mass

In a voltmeter the conduction takes place due to

Holes only

Electrons and ions

Electrons only

Electrons and holes

If the period of oscillation of mass (M) suspended from a spring is 2s, then the period of mass 4M will be

1 s

4 s

2 s

3 s

The product of the pressure and volume of an ideal gas is

Directly proportional to its temperature

Inversely proportional to its temperature

Approximately equal to the universal gas constant

A constant

Which of the following is a scalar quantity?

Torque

Displacement

Density

Weight

The motion without consideration of its cause is studied in

Kinematics

Mechanics

Modern Physics

Statics