Question # 1

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

Choose an answer

Increases

Decreases

Remain unchanged

Becomes infinite

Ammeter is used to measure

Choose an answer

voltage

resistance

voltage and current

current

When two protons are brought are brought closer potential energy of both of them:

Choose an answer

Increases

Decreases

Remains same

None of these

Which of the following theory completely explain the three types of materials

Choose an answer

Bohr model of electron distribution

Rutherford atomic model

Pauli's exclusion principle

energy band theory

According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area

Choose an answer

decreases

increases

becomes zero

none of them

The resistance of a conductor does not depend on its

Choose an answer

mass

resistivity

length

cross-sectional area

Two projectiles are fired from the same point with the same speed at angles of projection 60° and 30° respectively. Which one of the following is true?

Choose an answer

Their range will be same

Their maximum height will be same

Their landing velocity will be same

Their time of flight will be same

When the total displacement is divided by total time taken, we get:

Choose an answer

Velocity

Average speed

Average velocity

None of these

Referring to above figure, due to change in current in the coil P, the change in magnetic flux:

Choose an answer

Is associated with coil P

Is associated with coil S

Causes an induced current is coil S

All of these

None of these

A ray passing through optical center of a lens, after refraction:

Choose an answer

Passes through focus

Go deviated

Retraces its path

Both B and C

When quarter of a cycle is completed, the phase of vibration is:

Choose an answer

90°

180°

45°

360°

The distance from eye to near point is taken as:

Choose an answer

10 cm

15 cm

20 cm

25 cm

If the length of a simple pendulum is 0.25 m its time period would be

Choose an answer

1.0 s

2.0 s

3.0 s

4.0 s

The intensity of emitted energy (with wavelength) radiated from a black body at different temperatures was initially measured by:

Choose an answer

Lummer

Planck

Pringsheim

Both (A ) and (B)

Both (A) and (C)

A body is thrown from a height h with speed u, it hits the ground with speed V

Choose an answer

The value of V is maximum if the body is thrown vertically downward

The value of V is maximum if the body is thrown vertically upwards

The value of V is minimum if the body is thrown horizontally

The value of V does not depend on the direction of which it is thrown

The work performed on an object does not depend on:

Choose an answer

Force applied

Angle at which force is inclined to the displacement

Initial velocity of the object

Displacement

The open loop gain of OP-AMP is of the order of

Choose an answer

10²

10³

10⁴

10⁵

The volume of universal gas constant R is:

Choose an answer

8.314 J/K mole K

8314 J/K mole K

8.314 J/mole K

None of these

If the object is situated at focus of a convex lens, then its image is formed at:

Choose an answer

F

2F

Infinity

None of these

In radio-active decay, the original element which disintegrate to another element is called

Choose an answer

element

daughter element

parent element

none of these

Two forces each of the magnitude F act perpendicular to each other. The angle made by the resultant force with the horizontal will be:

Choose an answer

30°

45°

60°

90°

Work done is maximum when angle between force and displacement is:

Choose an answer

0°

90°

180°

None of these

Alternating current can be transmitted:

Choose an answer

To long distance

At very high cost

At very low cost

Both (A) and (C)

Both (A) and (B)

The damping depends upon the

Choose an answer

amplitude

sharpness

both of them

none of them

Which of the following is not thermo dynamical function?

Choose an answer

Enthalpy

Work done

Gibb's energy

Internal energy

The temperature scale approved in SI units is:

Choose an answer

Celsius scale

Kelvin scale

Fehrenheit scale

None of these

The angle which specifies the instantaneous value of the alternating voltage or current is called

Choose an answer

phase

critical angle

angle of incidence

all of these

Crests and troughs are formed in:

Choose an answer

Longitudinal waves

Transverse waves

Both of these

None of these

Lead, copper and wrought iron are examples of

Choose an answer

brittle substances

ductile substances

plastic substances

elastic substances

When two objects come to common temperature, the body is said to be in:

Choose an answer

Static equilibrium

Dynamic equilibrium

Thermal equilibrium

None of these

A force of 5 n is acting Y-axis. Its component along X-axis is:

Choose an answer

7 N

5 N

Zero

10 N

More Classes

Other Links

ECAT Pre General Science Physics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer