Question # 1

When either L or C is increased, the resonant frequency of the RLC series circuit

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Increases

Decreases

Remains the same

Becomes zero

Compton was awarded Nobel prize in physics in

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1921

1923

1925

1927

When current passes through a solenoid coil, it behaves like a

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loop

circle

bar magnet

none of these

Which quantity is important in stating the entropy of the system

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initial entropy

final entropy

change in entropy

none of them

In L.C.R series A.C. circuit, the phase angle between current and voltage is

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Any angle between 0 and +π/2

π/2

π

Any angle between 0 andπ/2

The surface destiny of charge is defined is:

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Charge per volume

Mass per volume

Charge per area

Mass per area

Both (B) and (C)

The analysis of the distribution of wavelengths of the radiation emitted from a hot body set the foundation of new mechanics, known as

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classical mechanics

Newtonian mechanics

quantum mechanics

statistical mechanics

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10^-3N. The force between A and B when the charges on them are doubled and distance is halved

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1.92 N

19.2 N

12 N

0.192 N

When the different streamlines cannot cross each other, then this condition is known as

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continuity condition

turbulent flow condition

steady flow condition

none of them

The velocity given to a body to go out of the influence of earth's gravity is known as:

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Terminal velocity

Orbital velocity

Escape velocity

None of these

The materials in which valence electrons are bound very tightly to their atoms and are not free, are known as

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conductors

insulators

semi-conductors

all of them

If the incident light contains different wavelengths the images of each wavelength for a certain value is diffracted in the

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Same directions

Different direction

Opposite direction

None of these

Gauss s law in electrostatics is true when the charges enclosed in Gaussian surface are

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Stationary only

Moving only

Moving or stationary

None of these

To demonstrate the phenomenon of interference we require two sources that emit radiation

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Of same frequency

Different wavelength

Of the same frequency and having definite phase relationship

Of nearly the same frequency

The projectile motion is composed of

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horizontal motion only

vertical motion only

horizontal and vertical motion

none of them

The ratio of volumetric stress to volumetric strain is called

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Young's modules

Bulk modulus

Shear modulus

Hooke's law

Three bodies are of masses m₁= 2.2 kg, m₂ = 10.02 g and m₃ = 10.01 g, the sum of their masses up to the appropriate is

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2.2 kg

2.203 kg

2.023 kg

2.0202 kg

The horizontal velocity component in projectile motion is

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Zero

Constant

Maximum

None of these

Stress beyond which a permanent deformation is observed in a body is called

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Minimum stress

Maximum

Yield stress

Plastic stress

Substances which donot easily flow have coefficient of viscosity as

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Small

Very small

Large

None of these

The dimensions of Planck’s constant “h” are same as that of:

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Momentum

Angular momentum

Work

Torque

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r

r²

r³

None of these

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