Quantitative Analysis MCQS for NTS Set 1

Two point charges placed at distance of 20 cm in air repel each other with a certain force.When a dielectric slab of thickness 8 cm and dielectric constant K is introduced between these point charges force of interaction becomes half of its previous value Then K is approximately.

2

?2

4

1

The acceleration ‘a’ in m/s² of a particle is given by a = 3 t² + 2 t + 2,where ‘t’ is the time if the particle starts out with a velocity v = 2 m/s at t = 0, then the velocity at the end of 2 second is

12 m/s

18 m/s

36 m/s

24 m/s

If a diamagnetic substance is brought near north or south pole of a bar magnet it is

Attracted by the north pole and repelled by the south pole

Attracted by the poles

Repelled by north pole and attracted by the south pole

Repelled by the poles

A body moving in circular motion with constant speed has

Constant kinetic energy

Constant displacement

Constant velocity

Constant acceleration

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart. with force of repulsion between the spheres to be 10^-19 N is

625

25

225

1250

What is the average energy of N molecules of monoatomic gas?

5/2 NkT

1/2 NkT

NkT

3/2 NkT

The primary winding of transformer has 500 turns whereas its secondary has 5000 turns The primary is connected to an a.c supply of 20 V, 50 Hz The secondary will have an output of

200 V, 50 Hz

200 V, 500 Hz

2 V, 50 Hz

Radio waves of constant amplitude can be generated with

FET

Oscillator

Rectifier

Filter

If in a moving coil galvanometer a current 1 produces a deflection ? then

i ? tan ?

i ? ??

i ? ?²

i ? ?

What is the ratio of r.m.s velocity for O₂ to H₂?

?4 : 1

4

1/4

1 : ?4