Question # 1

Charge on proton is

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1.59 x 10^-9C

1.59 x 10^-7C

-1.59 x 10^-19C

1.59 x 10^-19C

Newton published laws of motion in his famous book "principia" in

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1867

1667

1676

1687

A 1000 Kg car travelling with a speed of 90 km/hr turns around a curve of radius 0.1 km. The necessary centripetal force comes out to be:

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8.1 X 10⁷N

625 N

6250 N

None of these

Ohm established a relation between

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voltage and resistance

voltage and charge

voltage and current

voltage resistance and charge

According to the law of conservation of linear momentum, the total linear momentum of an isolated system

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increases

decreases with time

remains constant

none of them

The machines which deals with the objects moving with velocities approaching that of light is called:

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Relativistic mechanics

Wave mechanics

Quantum

Statics mechanics

Fraction of the decaying atoms per unit time is called

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decay atom

decay element

decay constant

decay

At the top of the trajectory of a projectile the acceleration is

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The maximum

The minimum

Zero

g

The restoring force is always directed towards:

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Rest position

Equilibrium position

Mean position

All of them

When a stress changes length, it is called the

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compressional stress

tensile stress

shear stress

any one of them

Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called

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deuteron

deterium

protium

tritium

Center of mass is a point

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Which is geometric centre of a body

From which distance of particles

Where the whole mass of the body is supposed to be centered

Which is the origin of reference frame

Telescope is an optical device used for viewing

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Near objects

Not far distance

Distant objects

b and c

A non-conducting semiconductor diode is:

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Forward biased

Poorly biased

Reverse biased

None of them

The Physical quantity which has the dimensional formula M¹T^-3 is

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Surface tension

Solar constant

Density

Compressibility

When three forces acting at a point are in equilibrium then

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Each force is numerically equal to the sum of the other two

Each force is numerically greater than the sum of the other two

Each force is numerically greater than the difference of the other two

None of the above

Shear modulus for glass is

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23

39

52

69

Which one is the case when the wavelength is actually changed?

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When source move relative to observer

When observer move relative to source

When observer moves around a stationary source at the center of circle

When the relative displacement between source and observer is zero

Work is defined as the dot product force and displacement which is a

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Scalar quantity

Vector quantity

Constant quantity

None of these

The product of force and time is called

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Momentum

Force

Impulse

None of these

The maximum stress that a material can withstand is known as

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plastic point

elastic point

yield point

ultimate tensile strength

Demension of torque is

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MLT^-2

ML²T^-1

ML²T^-2

ML²T²

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