Question # 1

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

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Entropy

Enthalpy

Isothermal conduction

Adiabatic conduction

Both xenon and cesium each have

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24 isotopes

28 isotopes

32 isotopes

36 isotopes

When the deforming force applied on a body produces change in volume then it is said to be

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Tensile stress

Compression stress

Shear stress

Shear modulus

Which one the following is not a component of a Bipolar junction Transistor

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Base

Emitter

Collector

Grid

If a wave vibrate 10 times in 1 s with a speed of 10 m s-1 the correct wavelength of the wave is.

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1 m

10 m

20 m

100 m

Which of the following is invariant under Galilean transformation.

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Velocity

Impulse

Momentum

Distance

Linear acceleration of a point moving in a circle of radius 30 cm with angular acceleration of 0.5 rad s-2 is

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1.5 cm s-2

2.5 cm s-2

10 cm s-1

15 cm s-2

Particle which can be added to the nucleus of an atom with changing its chemical properties are called.

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Electrons

Protons

Neutrons

Alpha particles

A magnetic pole

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Is made of a magnetic material

Is a factious quantity

Is defined in terms of Ampere's law

Cannot be detected

Neutrino9 is a particle with

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Charge less property and has no spin

Charge less property and has spin

Charge less like electron and has spin

The same property as neutron

In which device is a permanent magnet used

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An electric bell

An electromagnet

A plotting compass

A relay

Which quantity is not affected by a magnetic field.

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Moving charge

Stationary charge

Current flowing in a conductor

Charge in magnetic flux

Waves transfer

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Frequency

Velocity

Energy

Wavelength

What is the internal energy of a mono atomic ideal gas.

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Potential only

Parity kinetic and parity potential

Kinetic only

Neither kinetic nor potential

In a projectile motion, the horizontal range depends upon.

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Initial velocity

Velocity at the highest position

angel of projection

Vertical component of velocity

Which of the following in the best container for gas during adiabatic process.

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Copper vessel

Thermos flask

Glass container

Wooden container

The value of electric field intensity is.

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Volt

Coulomb

Newton

Newton coulomb

If in Young's double slit experiments the separation between two slits is halved then the fringe width

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Remains unchanged

Becomes double

Reduces to half

Becomes 3 times

In order to har an echo what is the minimum distance between the sound and reflecting surface.

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0.65 m

16.5 m

1.65 m

165 m

Which of the following is the ideal gas equation.

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PV -n RT

P/V = n RT

V/P = nR/T

PV = T/nR

Any substance that can flow is a

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Solid

Gas only

liquid only

Fluid

An instrument which can float in the liquid to be tested and by means of which the specific gravity of the liquid may be determined is.

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Hydrometer

Barometer

Siphon

Lactometer

A Galilean telescope with objective of coal length 30 cm and eyepiece of focal length.8 cm when focused for infinity has length equal to

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7.5 cm

2.2 cm

38 cm

240 cm

Light wave can be polarized because they

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Are transverse in nature

Can be reflected

Have short wavelength

Have high frequncies

Self inductances of solenoid is

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Directly proportional to the current flowing through the wire

Directly proportional to its length

Inversely proportional to area of corss section

Directly proportional to number of turns

A heat engine can develop efficiency equal to 100% if the temperature of the sink is

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Less than that of source

Equal to that of source

0 K

0 ^oC

The lowest stress at which strain increases in stress in called.

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elastic limit

Plastic limit

Yield point

Bulk strength

The amplitude of a vibrating body placed in a resistive medium.

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Increases exponentially with time

Decreases exponentially with time

Remains constant with time

Cannot be observed

Most cooking involves

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Adiabatic process

Isothermal process

Isobaric process

Isochoric process

Beats are the result of.

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Interference

Doppler's effect

Ultrasound

Polarization

The path of electron in Rutherford atomic model according to classical theory a.

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Parabolic

Straight line

Spiral

Circular

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