Question # 1

Two vectors to be combined have magnitudes of 60 N and 35 N. Pick the possible answer:

Choose an answer

100 N

70 N

20 N

Zero

A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:

Choose an answer

49 rad/sec²

1 rad/sec²

0.16 rev/sec²

Both A and C

Both B and C

Computer chips are made from

Choose an answer

Conductors

Semiconductors

Insulators

Both A and B

Waves transport energy

Choose an answer

without transport energy

with matter

both of them

none of them

Where the streamlines are very close to each other, the pressure will be

Choose an answer

low

zero

high

all of them

How many isotopes of helium are present?

Choose an answer

1

2

3

4

A line which represents the direction of travel of a wave is known as:

Choose an answer

Spherical Wavefront

Locus

Ray

Either B or C

For production of beats the two sources must have

Choose an answer

Different frequencies and same amplitude

Different frequencies

Different frequencies, same amplitude and same phase

Different frequencies and same phase

The equation of continuity

A₁V₁= A₂V₂is for the flow of

Choose an answer

an ideal fluid

an incompressible fluid

a non visconcous fluid

all of the above

Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?

Choose an answer

10³

10⁶

10⁹

10¹²

The use of chips in electrons is described in the form of:

Choose an answer

Yellow boxes

Black boxes

Red boxes

White boxes

Orange boxes

Domains are present only in

Choose an answer

Diamagnetic material

Para magnetic material

Ferromagnetic material

All of these

Even the small viscosity of the air causes a retarding force on car at high speed is

Choose an answer

Small

Large

Very large

None of these

A body of mass 'm' is moved to a height 'h' equal to the radius of the earth.The increase in potential energy is

Choose an answer

2 mgR

mgR

1/2 mgR

1/4 mgR

A diesel engine converts heat energy into work by

Choose an answer

35%

40%

35% to 40%

45%

The cause of mirage observed in deserts in bright sunlight is due to:

Choose an answer

Refraction of light

Reflection of light

Scattering of light

Total internal reflection of light

In torque when the force is kept constant and the moment arm increases, then the torque

Choose an answer

Increases

Decreases

Remains constant

None of these

The central point in the Newton's rings is dark due to

Choose an answer

Destructive interference

Constructive interference

Additional of path difference λ/2

b and c

Two wave of intensities I an 4I superpose then the maximum and minimum intensities are

Choose an answer

5I and 3I

9I and I

9I and 3I

5I and I

The original source of hydroelectric is

Choose an answer

Water

Wind

Sun

Moon

Which of the modulus of elasticity is involved in compressing a rod to decrease its length?

Choose an answer

Young's modulus

Bulk modulus

Modulus of rigidity

None of the above

The ratio of volumetric stress to volumetric strain is called

Choose an answer

Young's modules

Bulk modulus

Shear modulus

Hooke's law

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