Question # 1

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

Choose an answer

A constant

Approximately equal to the universal gas constant

Directly Proportional to its temperature

Inversely proportional to its temperature

If the earth were to rotate faster than its present speed the weight of an object will

Choose an answer

Increase at the equator but remain unchanged at the poles

Decrease at the equator but remain unchanged at the poles

Remain unchanged at the decrease but decrease at the poles

Remain unchanged at the equator but increase at the poles

Light appears to travel in straight lines since

Choose an answer

It is not absorbed by the atmosphere

It is reflected by the atmosphere

Its wavelength is very small

Its velocity is very large

A body moving in circular motion with constant speed has

Choose an answer

Constant velocity

Constant acceleration

Constant kinetic energy

Constant displacement

Blood has a density

Choose an answer

Equal to water

Greater then water

Lesser then water

None of these

According to the Hooke's law the force required to change the length of a wire by '1' is proportional to

Choose an answer

1^-2

1^-1

1

1²

One cannot see through fog because

Choose an answer

Fog absorbs light

The refractive index of fog is infinity

Light suffers total reflection at the droplet in a fog

Light is scattered by the droplets in fog

If the metal bob is a simple pendulum is replaced by a wooden bob, then its time period will

Choose an answer

Increase

Decreases

Remain the same

First 'A' then 'B'

In an L-R circuit time constant is that time in which current grows from zero to the value

Choose an answer

0.63 I_o

0.50 I_o

0.73 I_o

I_o

When a hydrogen atom is bombarded the atom is excited to the n = 4 state of hydrogen atom.The energy released when the atom falls from n = 4 state to the ground state is

Choose an answer

1.275 eV

12.75 eV

5 eV

8 eV

Which one of the following phenomena is not explained by Huygen's construction of wavefront?

Choose an answer

Refraction

Reflection

Diffraction

Origin of spectra

The unit of electric current 'ampere' is the amount of current flowing through each of two parallel wires 1 m apart and of infinite length will give rise to a force between them equal to

Choose an answer

1 N/m

2 x 10^-7N/m

1 x 10^-2N/m

4 x 10²N/m

The dimensional formula for the modulus of elasticity is same as that for:

Choose an answer

Stress

Strain

Velocity

Surface tension

Which of the following sources give discrete emission spectrum?

Choose an answer

Incandescent electric bulb

Sun

Mercury vapour lamp

Candle

A 2 kg body and a 3 kg body have equal momentum. If the kinetic energy of 3 kg body is 10 J, the KE of 2 kg body will be

Choose an answer

6.66 J

15 J

22.5 J

45 J

In Which case does the potential energy decreases?

Choose an answer

On compressing a spring

On stretching a spring

One moving a body against gravitational force

One the rising of an air bubble in water

Who explained the origin of the Fraunhoffer lines?

Choose an answer

Fraunhoffer

Kirchhoff

Fresnel

Snell

Which one of the following is a simple harmonic motion?

Choose an answer

Wave moving through a string fixed at both ends

Earth spinning about its own axis

Ball bouncing between two rigid vertical walls

Particle moving in a circle with uniform speed

Copper and germanium are cooled to 70K from room temperature, then

Choose an answer

Resistance of copper increases while that of germanium decreases

Resistance of copper decreases while that of germanium increases

Resistance of both decreases

Resistance of both increases

Angular momentum is

Choose an answer

Vector (axial)

Vector (polar)

Scalar

None of these

More Classes

Other Links

Physics General Science Test Hard 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