Question # 1

The capacitance of a capacitor increases with a decreases in.

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Plate area

Permitivity

Plate separation

Dielectric constant

The index of refraction depends on

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the focal length

The speed of light

The image distance

The object distance

Any substance that can flow is a

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Solid

Gas only

liquid only

Fluid

A charged capacitor has charge on its

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Outside surface

Inner surface

Surroundings

Mid point

How much lce will melt by 50,000 J of heat.

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120 J

130 g

140 J

150 g

When transistor works as an amplifier, its output is.

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More

Less

Zero

Directly proportional to the input

From any substance the temperature and pressure at which the material can coexist in all three states in equilibrium is called.

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Critical point

Triple point

Initial point

Final point

When a conductor situated in a dielectric is charted the energy resides.

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Only on the dielectric

Only on medium surrounding charge

On the dielectric and medium both

Only on the type of the charge

An object at the end of a spring oscillates with SHM of angular frequency 2 rad s-1 What is the period of oscillation.

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0.32 s

0.50 s

0.80 s

3.1 s

The scalar product of two vectors in negative when

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Vectors are parallel

Vectors are antiparallel

Vectors and perpendicular

Vectors are parallel with same magnitude

Which of the following is the science of measuring the heat of chemical reactions or physical changes.

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Thermometry

Calorimetry

Telemetry

Photometry

Two bullets a and b have masses 1 kg and 12 kg respectively.

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K.E. of B will be twice that of A

K.E. of A will be twice that of B

Both have same K.E.

K.E. of A will be half that of B

The spin angular momentum and orbital angular momentum are usually differentiated in terms of.

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Radius of bodies

Mass of bodies

Torques of bodies

Momentum of bodes

Which of the following is a non contacting device that intercepts and measures thermal radiation.

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Thermometer

Pyrometer

Voltmeter

Lactometer

The minimum angle of incidence for which total internal reflection can occur is called.

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Right angle

Acute angle

Critical angle

Obtuse angle

Which of the following proves that light waves are transverse in nature.

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Diffraction

Interference

Polarization

Refraction

At room temperature the potential difference between the two sides of depletion region for silicon is of the order of.

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0.3 v

0.5 V

0.7 V

0.9 V

The electric supply line in houses works at 220 V what will be the amplitude of emf.

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120 V

331 V

220 V

440 V

The working of cloud chamber is based in the presence of.

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Super heated vapours

Liquid

Super saturated vapors

Unsaturated vapours

Polarization of light shows that light is.

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Corpuscular in nature

Of extremely short waves

Longitudinal waves

Transverse waves

The equal and opposite forces acting on a body form

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Angular momentum

Linear momentum

Torque

Couple

Which of the following describes that the time interval between two events may be different in different of references

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Simullaneously

Time dilation

Length contraction

Mass variation

Which of the following does not produced an erect image.

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Galilean telescope

Terrestrial telescope

Prism binoculars

Astronomical telescope

The quality of a note

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Decreases with loudness

Varies directly as its pitch

Varies inversely as its pitch

Depends upon the overtones

Which of the following gases has the maximum rms speed at STP.

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O2

H2

N2

CO2

The unit of intensity of sound waves is.

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W m-1

W m-2

N m-1

N m-2

The mass of an helium nucleus is equal to.

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2.0015 u

3.0015 u

4.0015 u

5.0015 u

The phenomenon of beats takes place due to

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Longitudinal waves

Transverse waves

Stationary waves

Both a and b

To get large magnifying power of an astronomical telescope. we should have focal length of eye lens.

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Small

Large

Of any value

Infinity

Which of the following is not true.

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Velocity can be nagative

Velocity is a scalar

Speed is a vector

Speed can be negative

Such substance which undergo plastic deformation until they break are known as.

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Diatomic substances

Monoatomic substances

Ductile substances

Brittle substances

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