Question # 1

The principle of superposition states that

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The total displacement due to several waves is the sum of the displacement due to those waves acting individually

Two stationary waves superimpose to give two progressive waves

A diffraction pattern consists of many interference patterns superimposed on one another

Two progressive waves superimpose to give a stationary wave

The energy stored in a charge capacitor

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1/2CV²

1/2C²V

1/2C/V²

None of these

The sum of positive and negative peak values is called:

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Instantaneous value

Peak value

Rms valuie

Peak-to peak-value

None of these

Ethanol (alcohol) as a type of:

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Electric fuel

Bio fuel

Nuclear fuel

None of these

The SI unit of spring constant is identical with that of

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Force

Surface tension

Pressure

Loudness

Tick the correct answer:

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Torque is a vector quantity

Torque is the turning effect of a force

Torque is called moment of a force

All of above

The displacement of body executing SHM is

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x_ocoswt

x_osinwt

x_osin²wt

Both A, B

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

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maximum speed

zero speed

maximum speed

none of them

During the positive half-cycle in the half-wave rectification,the diode

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does not conduct

conducts

either of these

neither of these

A process is a reversible process, if the entropy of the system

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increases

decreases

remains constant

none of them

The ratio of shearing stress/shearing strain is called as

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Modulus

Pascal modulus

Hooker's modulus

Shear modulus

A disc of moment of inertia is 5 x 10^-3 kgm² is making 20 rad/sec. The torque required to stop it in 10 sec is

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1x10^-3 Nm

1x10^-2Nm

0.1x10^-3 Nm

None of these

Which of the following is a non-conservative force

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Nuclear force

Elastic force

Electrostatic force

Viscous force

Einsteins theory gives us a physical picture of how gravity

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Created

Produced

Works

None of these

The electric force between two charge placed in air is 2 Newtons. When placed in a medium of ∈_r = 80, the force reduces to

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0.019

0.029

0.025

0.03

If we know the refractive index of glass, speed v of light in the glass can be found by

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v = c n

v = c/n

v = n/c

None of these

When a body movies in a circle in the counter clockwise direction the angular displacement Δθ is taken as

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Positive

Negative

Both ways

None of these

The image formed by an eyepiece of compound microscope is

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Real and diminished

Real and enlarged

Virtual and enlarged

Virtual and diminished

The capacitance of capacitor depends on the

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Medium between two plates

Charge stored

Distance between the two plates

All of them

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

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Surface tension

Solar constant

Density

Compressibility

if volume of a sphere increases then terminal velocity

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Remains same

Increases

Decreases

None

The blood vessels are inflated eve in

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Relaxed states between heart beat

Working state between hear beat

Occasionally

None of these

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