Question # 1

A 4 kJ mass of copper of specific heat capacity of 400 J kg-1k-1 is heated for 160 s by a heater of power 200 W what is the rise in temperature.

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10 K

16 K

100 K

160 K

The ration of Universal gas constant and Avogadro's number is called.

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Equilibrium constant

Velocity constant

Boitzmann's constant

Gravitational constant

A fringe is a path of.

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Constant amplitude

Constant phase

Same wavelength

Constant frequency

A wire surrounded by a concentric cylindrical metal shield constitutes a.

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Spherical capacitor

Parallel plate capacitor

Cylindrical capacitor

Cylindrical condenser

In onw cycle of a steam engine there are how many dead centres.

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1

2

3

zero

Birds planes and boats are streamlined to reduce

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Turbulence

Thrust

Drag

Lift

If the output voltage is not smooth but pulsating then it can be made smooth by using a circuit known as.

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Filter

Gate

shunt

Fuse

Which of the following is an example of continuous spectra.

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Black body radiation spectrum

Molecular spectra

Atomic spectra

grating spectrum

Which experiment is a demonstration that matter and energy can display properties of both waves and particles.

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young's double slit experiment

Division germier experiment

Heisenberg's uncertainty experiment

Stern Gerlach experiment

The product of mass and specific heat of a substance is called.

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Latent heat

Water equivalent

Atomic heat

Heat capacity

What is the minimum number of thermodynamic parameters required to specify the state of gas system.

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1

2

3

Infinite

The terminal velocity in case of spherical droplet is directly proportional to.

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Square of the radius of the droplet

Radius of the droplet

Cube of the radius of the droplet

Half of the Radius of the droplet half

The dispersive power of a grating is

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Light used

Separation of lines

Frequency of light used

Independent of wavelength

The image formed by a projector is

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Real, inverted and enlarged

Real, upright and enlarged

Real ,inverted and diminished

Virtual, upright and diminished

When a perfect gas is supposed to expand freely in an isolated vessel the gas has undergone.

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An increase in pressure

An increase in temperature

A change in phase

A change in entropy

The horizontal distance of a projectile from the point of launch to the point of impacts is called.

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Height of projectile

Range of projectile

Path of projectile

Angle of projectile

Echoes arise from

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Reflection

Refraction

Diffraction

Dispersion of sound waves

Resonance phenomenon in a vibrating body

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May increase the amplitude

May decrease the amplitude

May not affected the amplitude

All of the above

Intensity of the dark bands in interference pattern becomes zero when two waves.

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Of light are monochromatic

Are of the same frequency

Are of the same amplitude

Travel in opposite direction

In a projectile motion, the horizontal range depends upon.

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Initial velocity

Velocity at the highest position

angel of projection

Vertical component of velocity

The dimensions of viscosity are

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[MLT-1]

[MT-2]

[ML-1T-1]

[ML2T-1]

If pressure and temperature of an ideal gas is doubled and volume is halved, the number of the gas molecules.

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Become half

Remain constant

Become double

Become three times

Which pair of the following forces has a resultant force of 2 N.

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1 N and 1 N

1 N and 3 N

1 N and 2 N

2 N and 2 N

Image formed by a camera is

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Real, inverted, and diminished

Virtual, upright and diminished

Virtual, upright and magnified

Real, inverted and magnified

The first super conductor was discovered by

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Faraday

Lenz

Kamaerlingh Ornes

Oersted

The temperature which is the same in ^oC and ^oF is.

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-20

-40

20

40

If the transformer turns ratio is 2 and the impedance of primary coil is 250 Ohms then the impedance secondary coil will be.

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125 Ohms

250 Ohms

500 Ohms

1000 Ohms

In a purely inductive circuit, the current

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Lags behind the emf by 90^o

Leads the emf by 90 ^o

Is in phase with emf

May lag or lead the emf

What is the average K.E. of gas molecules at temperature equal to K.

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kt/3

3/2 KT

1/2 KT

2/3 KT

When the deforming force applied on a body produces change in length then it is said to be

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Tensile stress

compression stress

Shear stress

Shear modulus

The average energy released per fission of U is about

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200 eV

2 keV

2 MeV

200 MeV

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