Question # 1

Energy stored in the spring of a watch is called

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Potential energy

Kinetic energy

Nuclear energy

Elastic potential

In RLC series circuit, resonance occurs when

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X_{L > Xc}

X_{L < Xc}

X_{L = Xc}

None of these

The A.M. transmission frequency range from

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500-1000 KHz

540-1600 KHz

300-490 KHz

900-2040 KHz

To sources are said to be coherent if they have:

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Same amplitude

Same wavelength

Definite phase relation with each other

None of them

Power is a :

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Vector quantity

Base quantity

Scalar quantity

None of these

The wave form of alternating voltage is the graph between:

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Voltage across X-axis and time across y-axis

Current and time

Voltage along y-axis and time along x-axis

Voltage and current

Either (B) or (D)

Density is defined as:

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Mass per volume

Volume per mass

Mass x volume

Mass per length

The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:

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More, lesser

Lesser, more

Both A and B

Lesser, lesser

A prism splits a beam of white light into seven component colors. This is so because

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Phase of different colors is different

Amplitude of different colors is different

Wavelength of different colors is different

Velocity of different colors is different

A long wire wound tightly on a cylindrical core is called:

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Potentiometer

Solenoid

Toroid

Wheat and stone bridge

None of these

Resolving power in mth order diffraction for grating is given by:

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R = N/m

R = m/N

R = N x m

None of these

Einsteins theory gives us a physical picture of how gravity

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Created

Produced

Works

None of these

Polaroid glass is used in sun glasses because

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It is fashionable

It has good color

It is cheaper

It reduces the light intensity to half on account of polarization

If L and R denote inductance and resistance respectively.then the dimensional formula of L/R is:

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(M°L°T°)

M°L°T°

(M²L^°T²)

(MLT²)

Mathematically the vertical velocity component is

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V_fy = Vi cos θ - gt

V_fy = Vi cos θ + gt

V_fy = Vi sin θ - gt

V_fy = Vi sin θ + gt

The relation for the adiabatic change is

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PV = Constant

PV²= Constant

PV^r= Constant

PV^-r= Constant

pgh in Bernoulli's equation has unit of

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Volume

Force

Work/Volume

None of these

The curie temperature for iron is

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750°C

570°C

750°k

57°K

The insulators have conductivities ties in the range

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10^-10 to 10^-20 (Ωm)^-1

10^-5 to 10^-20 (Ωm)^-1

10^-15 to 10^-25 (Ωm)^-1

None of these

An INTEASAT VI satellite operates at microwave frequencies of

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4, 6, 13, 16 GHZ

4, 5, 11, 13 GHz

4, 6, 11, 18 GHz

4, 6, 11 and 14 Ghz

What is the SI unit of Tensile strain?

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Nm^-2

Jm^-2

Nm^-1

Being a number, it has no unit

The atoms molecules or ions in a crystalline solids are at room temperature

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Motionless

Vibrate violently

Fixed

Simply vibrate

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