Question # 1

Two vectors having different magnitudes:

Choose an answer

Have their directions opposite

May have their resultant zero

Cannot have their resultant zero

None of these

Which of the following diode is used for the detection of light

Choose an answer

photo diode

light emitting diode

photo voltaic cell

all of them

Choose an answer

5μF

10μF

3μF

6μF

When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:

Choose an answer

Starts increasing

Starts decreasing

Becomes constant

Is called escape velocity

A ball is thrown upwards with a velocity of 100 m/s. It will reach the ground after

Choose an answer

10 s

20 s

5 s

40 s

When resistance of a current carrying wire increases due to rise in temperature, the drift velocity of electrons:

Choose an answer

Decreases

Increases

Remains the constant

Either of these

None of these

Gaussian surface is always:

Choose an answer

Rectangular

Spherical

Cylindrical

Box shape

Any of these

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:

Choose an answer

0.5 J

2 J

0.25 J

1 J

When certain nucleus emits anα particle, its mass number:

Choose an answer

Increases by one

Decreases by one

Remain same

Decreases by four

None of these

Which of the following is most suitable as the core of transformer

Choose an answer

Soft iron

Alinco

Steel

None of these

The SI unit of permitivity is

Choose an answer

Nm²C²

N^-1m^-2C²

NmC²

Nm²C^-1

The relative permitivity ∈_r for rubber is

Choose an answer

2.8

3.0

2.90

2.94

In thrill machine rides at amusement parks, there can be an acceleration of

Choose an answer

2 g

3 g

More than 3 g

4 g

A science student takes 100 observations in an experiment Second time he takes 500 observations in the same experiment By doing so the possible error becomes

Choose an answer

5 times

1/5 times

Unchanged

None of these

In case of uniform circular motion which of the following physical quantity do not remain constant?

Choose an answer

Speed

Momentum

Kinetic energy

Mass

The whole range of colour printing uses just

Choose an answer

4 colours

3 colours

2 colours

Red, blue, gray

For the angle of projection of a projectile for which its maximum height and horizontal range are equal

Choose an answer

50°

45°

60°

76°

The distance from Earth to Sun is

Choose an answer

10⁹ m

10⁸ m

10¹⁰ m

10¹¹ m

In equation of continuity, if the fluid is incompressible and the flow is steady, the mass of the fluid is

Choose an answer

Some what conserved

Conserved

Not conserved

None of these

When torque acting on a system is zero which of the following is constant

Choose an answer

Force

Impulse

Angular momentum

Inertia

The body moving with uniform velocity may be

Choose an answer

in equilibrium

accelerating

changing in direction

changing in magnitude

For a gas obeying Boyle's law, if the pressure is doubled the volume becomes:

Choose an answer

One half

Double

Four times

None of these

More Classes

Other Links

Physics General Science Test Medium Mode 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