Question # 1

The resistance of a capacitor when it is connected with a battery is.

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Zero

Finite

Infinite

The same

When a solid is melting the temperature remains constant even through heat is being supplied because the

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Heat is being used to break up the intermolecular bonds

Solid is not absorbing any heat

Molecules are moving faster

Molecules are farther a part

Photocells are used for

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Security systems

Counting systems

Automatic door system

All of the above

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

Which of the following is the ability to hold an electric charge in electromagnetism.

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Resistance

Impedance

Inductance

Capacitance

If each particle of the fluid passing through a point follows the same path then flow is said to be

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Regular flow

Irregualr flow

Turbulent flow

Streamline flow

If we double both the current and the voltage in circuit while keeping its resistance constant the power.

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Remains unchanged

Halves

Doubles

quadruples

Who proposed the thermodynamic scale of temperature.

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Saadi carnot

Lord Kelvin

Sir james dewar

Gabriei fahrenheit

The final image produced by a microscope is.

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Real and erect

Virtual and erect

Real and inverted

Virtual and inverted

If a vehicle is to gain momentum it must

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Lose weight

Move slowly

Lose inertia

Accelerate

In an isochoric process.

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Volume changes

Pressure changes

Temperature changes

Volume remains constant

The energy supplied in charging a capacitor resides after the charging in.

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The magnetic field

The electric field

the battery

The moving conduction charges

The maximum K.E of photo electrons depends upon

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Energy of incident radation

Frequency of incident radiation

Wavelength of incident radiation

Mass of incident radiation

The charge on an Isolated conductor always lies.

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Within the conductor

At the centre of the conductor

On the surface of the conductor

Outside the surface of the conductor

The moment of inertia depends upon

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Mass of the body and its radius

Mass of the body and its angular speed

Mass and angular momentum

Mass as well as the distribution w.r.t axis of rotation

The 1st condition of equilibriums satisfied if.

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Linear acceleration is zero

Angular acceleration is zero

The vector sum of all the forces is zero

The vector sum of all the torque is increase

Pure silicon has valence electrons

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1

2

3

4

By decreasing angle between two vectors their cross product.

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Increases

Decreases

Remains the same

Vanishes

What is the triple point of water.

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273 .15 K

0 K

100 K

0 oC

Intensity of the dark bands in interference pattern becomes zero when two waves.

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Of light are monochromatic

Are of the same frequency

Are of the same amplitude

Travel in opposite direction

The viscosity of an ideal fluid is

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Infinity

Unity

Zero

0.5

when a body accelerates.

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Its direction always changes

Its mass always changes

Its velocity always changes

It falls towards the earth

Good acoustic implies

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Obtaining as much reverberations as possible

Making the reverberation as small as possible

Obtaining the optimum of reverberations

Eliminating reverberations

If we use two diodes and a centre tapped transformer we eill get

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Transistor

Amplifier

Half wave rectifier

Full wave rectifier

Bernoulli's equation is Applica table to points

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In a steady flowing liquid

In a streamline

In a straight line perpendicular to steamline

In any non viscous liquid

Which of the following gives discrete emission spectrum.

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Sun

Candle

Incandescent filament

Mercury vapour lamp

What is the scale for measurement of Banbridge mass spectrograph.

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Linear

Inverse

Exponential

Logarithmic

The tunnel effect makes possible

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Alpha decay

Gama rays

Positive Beta decay

negative Beta dacay

Which of the following propagates at the same speed as velocity of light.

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Heat waves

Sound waves

Shock waves

Beta particles

Which of the following is not SI base unit.

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kilogram

Ampere

Coulomb

Mole

The main advantage of a grating over Young's apparatus is the

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Sharpness of the bright lines

Absence of dark fringes

Absence of bright fringes

Greater deviation of light

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