Question # 1

A capacitor is connected to a battery The fore of attraction between the plate when the separation between them is halved will

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Remain the same

Become twice

Become 4 times

Become 8 times

Which of the following has maximum viscosity.

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Oxygen

Mercury

Water

Glycerine

Who studied the change in velocity with the help of geometry for the first time.

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Nicole Oresme

Galileo

Alberuni

Ibn al haithem

The specific heat capacity of a substance is the amount of heat required to.

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Raise its temperature by 1 K

Raise the temperature of 1 kg of the substance by 1 K

Melt 1 kg of the substance

Boil 1 kg of the substance

In case of stationary waves every particle of the medium has fixed

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Velocity

Displacement

Amplitude

Phase

What makes the air coming out of a punctured tyre cool.

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Isothermal expansion

Adiabatic expension

Flow at high speed

Atmospheric pressure

The phase different between the particles vibrating's between two consecutive nodes is.

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0

Lamda /2

2

2 lamda

Ethanol is a replacement of

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Gasoline oil

Kerosene oil

Refinery oil

vegetable oil

In a n-type material there is an excess of.

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Free electrons

Holes

Quarks

Measons

Out of the following pairs, which one does not have te same dimensions.

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Force and weight

Pressure and stress

Energy and work

Momentum and torque

A perfect gas is one whose

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Molecules are masless

Molecules are energetic

Molecules are perfectly elastic

Molecules are at rest

Which of the following is the most commonly used regions of operations for a transistor.

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Cut off

Saturation

Active

All of these

In the experiment of photo electric effect the minimum frequency of photons at which electrons are emitted from a metal surface is called.

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Critical frequency

Typical frequency

Threshold frequency

Surface frequency

The force of gravity between two objects does not depend upon the.

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Constant of gravitation

Separation

Product of their masses

Sum of their masses

Select the one that is not a donar

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P

AS

Sb

In

In the case of forced oscillations frequency of oscillation is.

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The natural damped frequency

The natural undamped frequency

The frequency of the external periodic force

Some other frequency

Venturimeter is a device used to measure

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Density of a fluid

Speed of a fluid

Pressure of a fluid

Viscosity of a fluid

In order to measure the true emf of an electrolytic cell it is necessary that.

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The measurement be made while charging the cell

No current be drawn from the cell

The cell be connected into a type circuit

The cell be connected into a parallel type circuit

When amplitude of a wave becomes double its energy becomes.

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Xero

Double

4 times

6 times

Which one of the following cannot be polarized.

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Radiowave

Ultraviolet rays

X- rays

Sound waves

No current flows between two charged bodies when connected if they have same.

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Charge

Capacity

Potential

Shape

The relation between horse power and watt is.

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1 hp = 546 watts

1 hp = 746 watts

1 hp = 946 watts

1 hp = 1000 watts

Which of the following form of electromagnetic energy has the highest frequency.

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X rays

Game rays

Ultraviolet waves

Infrared waves

Two waves which combine to produce a resultant by reinforcing each other of every point demonstrate.

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Destructive interference

constructive interference

Refraction

polarization

Two magnetic lines of force

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Out near the poles

Never cut each other

Cut at a neutral point

Cut according to position of the magnet

The closed end of an organ pipe having longitudinal stationary waves in it behaves as

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Antinode

Source of waves

Node

Antinode

At which temperature a ferromagnetic material is converted into a paramagnetic one.

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curie temperature

Boyle's temperature

Natural temperature

Neutral temperaturre

Which of the following represents an elastic wave.

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Light waves

Radiowaves

X-rays

Sound waves

The minimum velocity needed to put a satellite into the orbit

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Terminal velocity

Escape velocity

Critical velocity

Linear velocity

The nucleus of tritium is called.

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Proton

Triton

Deuleron

Positron

The pulsating outflow of blood from the heart by alternate systole and diastole is smoothed out by

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The blocking action of the heart's valves

The viscosity of the blood

The effect of gravity

the elasticity of the blood vessels

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