Question # 1

The torque per unit twist of coil is called

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proportionality constant

gravitational constant

boltzman constant

coupling constant

The maximum drag force on a falling sphere is 9.8 N, it weight is

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1 N

9.8 N

4.9 N

Cannot be calculated

Nucleus of a hydrogen atom may contain:

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One neutron only

Two protons and one neutron

Two protons and two neutrons

Aany of above

One proton only

At absolute temperature, the kinetic energy of the molecules

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Becomes zero

Becomes maximum

Becomes minimum

Remain constant

A vehicle of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop the vehicle in 10s is

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120 x 10.8 N

180 N

720 N

360 N

Astrophysics is a branch of physics, which deals with:

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Sub-atomic particles

Stars and galaxies

Light and sound

Music

The Nobel Prize on the explanation of photoelectric effect was awarded to:

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Max. Planck

Maxwell

Bohr

Rutherford

None of these

If N is the total number of molecules and V is the volume of the container, then the expression for the pressure of gas is

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P=P/V<1/2mv²>

P=2N/V<1/2mv²>

P=2/3N/V<1/2mv²>

P=2/3N/V<mv²>

If the two charges in Coulomb's law have double distance between them, then electric force

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Becomes two-fold

Becomes four-fold

Remains the same

None of these

No spark plug is needed in

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petrol engine

diesel engine

both of them

none of them

For a n-p-n transistor, the conventional current equation can be written as

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I_E+ I_C= I_B

I_C- I_B= I_E

I_C+ I_B= I_E

I_B+ I_E= I_C

Approximate power of an electric heater in watts

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2 × 10⁸

2 × 10⁵

2 × 10³

2.1 × 10⁴

Close orbiting satellites orbit the Earth at a height of about

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500 km

400 km

300 km

800 km

In thermodynamics, the internal energy is a function of

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Time

State

Temperature

None of these

If a car at rest accelerates uniformly to a speed of 144 km/h in 20 s it covers a distance of

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20 m

400 m

1440 m

2880 m

For which position will be maximum blood pressure in a body have the smallest value

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Standing upright

Sitting relaxed

Lying horizontally

Standing on one's head

The modulus of elasticity can be written as

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stress x strain

strain/stress

1/2 x stress x strain

stress/strain

Glass is an example of

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crystalline solid

amorphous solid

polymeric solid

none of them

The distance between the concentric wavefronts is

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half wavelength

one wavelength

one and a half wavelength

none of them

The cause of power loss in optic fibre is

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Absorption

Scattering

Dispersion

All

The speed of secondary wavelets as mentioned in Huygen's principle is______the speed of propagation of the wave itself:

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Equal to

Greater than

Smaller than

None of these

Two circular rings have their masses in the ratio 1 : 2 and diameter in ratio 2 : 1 the ratio of their moment of inertia is

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1:4

4:1

2:1

√2:1

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