Question # 1

Galvanometer is a device used for the detection of

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voltage

current

temperature

pressure

Bodies which falls freely under gravity provides good example of motion under:

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Uniform acceleration

Non-uniform acceleration

Uniform velocity

None of these

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

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parallel to the field

Perpendicular to the field

At an angle of 45 to the field

None of the above

The Nobel Prize on the explanation of photoelectric effect was awarded to:

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Max. Planck

Maxwell

Bohr

Rutherford

None of these

A pair of quark and antiquark makes a:

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Meson

Baryon

Proton

Neutron

None of these

If the ratio of densities of two gases is 1:4, then the ratio of their rates of diffusion into one another is

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2 : 1

4 : 1

1 : 4

3 : 4

A signal is amplified at the output without any change of phase, if it is applied at the

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inverting input

non-inverting input

at any of the input

none of these

Amperean path is a:

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Closed path

Rectangular path

Circular path

Any of above

Broken path

An inertial frame of reference is that frame of reference in which

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a = 0

a > 0

a < 0

all of them

The solids which has structure in-between order and disorder are called

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amorphous solids

polymeric solids

crystalline solids

all of them

Electron volt is the unit of

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Potential difference

Energy

Resistance

Capacitance

A pure semiconductor has:

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An infinite resistance at 0^oC)

A finite resistance which does not depend upon temperature

A finite resistance which decreases with temperature

A finite resistance which increase with temperature

A hole is made in the bottom of a container having water field up to a height h, the velocity of water flowing out of the hole is depend on

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Independent of h

Proportional of h^1/2

Proportional to h

Proportional to h²

To produce same acceleration in the bodies of masses 10 kg and 20 kg the force applied in the second body should be

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Halved

Equal for both bodies

Doubled

Three times

Solar energy at normal incidence outsides the Earth atmosphere is about

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1.043 Wm^-2

1.2 Wm^-2

1.4 Wm^-2

1.67 Wm^-2

In the self-cross product the angle is

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0°

45°

90°

180°

When the velocity of a liquid flowing steadily in a tube increases,its pressure?

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Decreases

Increases

Remains same

Zero

A force of 10N is acting along y-axis.Its component along x-axis is

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10N

20N

100N

ZeroN

When two axis are drawn at right to each other are called

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Coordinate axes system

Cartesian system

Rectangular coordinate system

All of these

If (a x b) points along positive z-axis,then the vectors a and b must lie in.

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yz-plane

zx-plane

xy-plane

None of the above

Who discovered the inverse square law of gravity

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Einstein

Newton

Compton

Fermi

The constant K in Coulomb's Law depends upon

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Nature of medium

System of units

Intensity of charge

a & b

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