Question # 1

An electric Heater and a fan are marked 1000 W, 250 V and 100 W , 220 V respectively The resistance of fan is.

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Equal to that of heater

Greater than that of heater

Less than that of heater

Zero

The strength per unit volume of a solid is called.

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shear stress

Shear strain

Bulk strength

Bulk modulus

Who was the most outstanding theoretical physicist.

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Daniel

Maxwell

Ampere

Young

Who introduced the concept that an atom posses quantized energy levels.

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Raman

Bohr

Newton

Fermi

Electrostatic force as compared to gravitational force is

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Zero

infinite

Very weak

Very strong

A cork moes at 5 m s-1 on the crest of a wave The distance between the crests is 10 m. The frequency of the wave motion is.

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0.5 Hz

1.0 Hz

2.0 Hz

5.0 Hz

tuning a radio set is an example of.

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Musical resonance

Electrical resonance

Mechanical resonance

Damping

Which of the following quantity has a unit that can be expressed in terms of just two different SI base units.

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Area

Change

Electric current

Length

When we decrease the diameter of the objective lens of a telescope the resolution of telescope

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Increases

Decreases

Remain the same

Depends upon the focal length of the lens

Materials that experience a force from stronger to weaker regions of magnetic field are called.

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Non magnetic

Paramagnetic

Ferromagnetic

Diamagnetic

Transistor are made from

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Plastics

Metals

Insulators

Doped semiconductors

The appearance of colures in their film is due to

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Diffraction

Dispersion

Interference

Polarization

Which italian inventor is credited with describing and sketching the first ideas for contact lens in 1508

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Galileo

Leonardo da vinci

roger Bacon

Hans Lipperahey

The thermal inertia of a thermodynamic system is known as its.

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Entropy

Enthalpy

Isothermal conduction

Adiabatic conduction

Which law states that two given samples of an ideal gas at the same temperature pressure and volume contain the same number of molecules.

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Charles law

Avogadro's

Boyles law

Boizmann law

What is a measure of the total energy of a thermodynamics system.

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Entropy

Enthalpy

Randomness

Chaos theory

During an adiabatic gas expansion the environment

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Serves as a heat sink

Serves as a heat source

Must be at a higher temperature than the gas

Does not have to participate

Abu abdullah ibn Jabir Al battani was the greatest

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Philospher

Mathematician

Astronomer

Palmist

The function of collimator in spectrometer is to

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Disperse the light

Reflect the light

Make the light parallel

Diffract the light

Two wires P and Q each of same length and the same material are connected in parallel to a battery The diameter of P is half that of Q What fraction of the total current passes through P.

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0.02

0.25

0.33

0.50

The loss of mass in a.m.u in a nuclear change can be calculated from energy involved in MeV by

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Dividing by 931

Multiplying by 931

Diving by 391

Multiplying by 391

What is a measure of the separation of positive and negative electrical charges in a system of charges.

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charge polarization

Electric dipole moment

Electric field

Electrostatic induction

When an unbalanced external force acts on a body for a short interval of time.

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The body will experience an impulse.

The momentum of the body increases

The velocity of the body increase

The body is not effected

The design of an airfoil uses

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Archimedes principle

Bernouli's principle

Pascal law

Hooke's law

The maximum distance between an object and its real image in case of convex lens is

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f

2f

2.5 f

4 f

When we look at the sky during daytime the light that we see is sunlight that has been absorbed and then re radiated in different directions, This process is called.

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Scattering

Diffusion

Mirage

Rainbow

Nuclear force exists between

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Proton proton

Neutron -neutron

neutron -proton

All of these

With the increase of temperature, teh pitch of an organ pipe

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Increase

Descrease

Remain the same

May increase or decrease

In simple harmonic motion it is found that the total energy of a system.

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Is independent of the amplitude

Depends on the amplitude squared

Is independent of the mass

All of these

If a planet of mass double than that of the earth and radius three times greater than the earth a 10 kg mass on its surface will weight.

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2.2 N

4.4 N

6.7 N

13.2 N

A ball is thrown straight up What is its acceleration just before it reaches the highest point.

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Zero

slightly less than g

Exactly g

Slightly greater than g

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