Question # 1

The combined resistance of two identical resistors, connected in series is 18 Mega Their combined resistance in a parallel arrangement will be.

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2 Mega

4 Mega

8 Mega

12 Mega

In CC configuration voltage gain is.

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Less than one

More than one

One

Zero

A system of the equal and opposite point charges separated by a small distance is called.

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A capacitor

A dipole

An iinductor

A di electric

A magnetic field is said to exist at a point if

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A force is exerted on a charge placed at that point

A magnetic pole exists at that point

An ampersand current loop surrounds the point

A force not felt by a static charge acts on a moving charge placed at that point

If the transformer turns ratio is 2 and the impedance eof primary coil is 250 Ohms then the impedance secondary coil will be.

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125 Ohms

250 Ohms

500 Ohms

1000 Ohms

Which statement for geostationary orbit is false.

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A geostationary orbit must be directly above the equator

All satellites in a geostationary orbit must have the same mass

The period of a geostationary orbit must be 24 hours

There is only one possible radius for geostationary orbit

The circuit of full wave rectification consists of

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Only one diode

Two diodes

Three diodes

Four diodes

Rainbows and mirage are formed by

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Reflection only

Refraction only

dispersion only

A combination of refraction, total internal refraction and dispersion

A body of mass 2 kg is suspended from the celling of an elevator moving up with an acceleration 'g' its apparent weight in the elevator will be.

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9.88 N

19.8 N

29.4 N

39. 2 N

If a rope in a hand makes 10 oscillations after every 2 s. the frequency of the wave is.

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2 C s-1

5 C s-1

10 C s-1

20 C s-1

The efficiency of a diesel engine is about

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15% to 35 5

355 to 40%

45% to 655

505 to 65 %

A force passing through the centre of gravity of a body

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Causes its translational motion

Causes its rotational motion

Holds the body in equilibrium

Produces both translational and rotational motion.

Which of the following is a unit of electric field strength.

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c m-1

v m-2

N C-1

N V-1

The power of convex lens of focal length 50 cm will be

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1,0 dioptre

2.0 dioptre

4.0 dioptre

5.0 dioptre

Which form of electromagnetic radiation is used in RADAR.

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Long wavelength ultraviolet waves

short wavelength microwaves

short wavelength infrared wave

Long wavelength radiowaves

The SI unit of heat capacity is.

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kg J

Kg J-1

J K-1

Kg J-1 K-1

The inductance in a coil plays the same role as

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Inertia plays in machans

torque plays in machines

Energy plays in machines

Momentum plays in machines

Which of the following pair is correct.

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Rutherford - x-rays

Roentgen - Electron

Chadwick - Neutron

J.J. Thomson -Photon

Which of the title for combining of notes that produce jarring effect on the ear.

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Noise

Melody

Harmony

Discord

At which temperature a ferromagnetic material becomes paramagnetic on healing.

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Kelvin temperature

Celsius temperature

Curie temperature

Fahrenheit temperature

If we use two diodes and a centre tapped transformer we will get.

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A transistor

An amplifier

A half wave rectifier

A full wave rectifier

Andrews isothermal helps to messure

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Boiling point

Boyle's temperature

Temperature of inversion

Critical temperature

Waves transfer

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Frequency

Velocity

Energy

Wavelength

The moment of linear momentum is called.

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Torque

Couple

Impulse

Angular momentum

A body is termed as perfectly elastic if.

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It can move freely

Its surface is perfectly somooth

It is not affected by an external force

It recovers the original shape when the deforming force is remover

Absolute P.E. of a body can be calculated

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At centre of the earth

Below centre of the earth

From surface of the earth

Below surface of the earth

Blue colour of sky is due to.

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Diffraction

Reflection

Polarization

Scattering

By definition a gas is said to be have undergone adiabatic compressing when

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No heat exchange occurs between the gas and its surroundings

The gas is compressed quickly

The gas is compressed slowly

The temperature of the gas remains constant

The gravitational force between two bodies does not depends upon.

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The product of their masses

Their separation

The sum of their masses

The constant of gravitation

Some concept of static electricity were introduced by.

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Chinese

Plato

Thales

Archimedes

How solid hydrogen is obtained.

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By cascade process

By joule kelvin effect

By adiabatic expansion

Lowering temperature below melting point

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