Question # 1

The ration Cv/Cp = y for a diatomic gas like air is

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1.29

1.30

1.40

1.67

Which animal did Erwin Schrodinger contemplate using in his famous thought experiment.

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mouse

Cat

Dog

Rabbit

The strength of photo electric current depends upon.

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Intensity of incident light

Frequency of incident light

Angle of incident light

Distance between anode and cathode

Who developed the world's first vacuum pump in 1650.

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Otto vori Guricke

Lord Kelvin

Saadi Carnot

James maxwell

The resistance of 10 micro F capacitance, when connected to A D.C. circuit is.

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Zero

Unity

-1

Infinity

The phenomenon of total internal reflection occurs in

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Optical fibre

Rainbow

Mirage

All of these

A force of 100 N acts on body of mass 5 kg for 10 s. The velocity of the body will be.

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2 ms -1

20 m s-1

200 ms-1

2.000 m s-1

The power of a convex lens is 5 D at what distance the object should be placed from the lens so that its real and 2 times larger image is formed.

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25 cm

30 cm

35 cm

40 cm

An increase in frequency above threshold frequency results in.

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Increase in photo electric current

Increase in K.E. of electrons

Decrease in photoelectric current

Decreases in K.E. of electrons

Compton scattering experiment seemed to indicate that radiation had

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Wave nature

Particle nature

Wave particle nature

X-rays nature

Length of second pendulum is

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98 cm

99 cm

99.2 cm

100 cm

In the magnetic circuit concept the quantity analogous to electric current in electric circuit analysis is.

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Magnetic flux density

Permeability

Magnetic field intensity

Magnetic flux

A hydrometer floats to a particular level in sea water in fresh water it.

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Floats lower

Sinks completely

Floats higher

Floats at the same level

A bi convex lens of a material of refractive index 1.5 has the radius of curvature of each side equal to 50 cm the power of the lens will be.

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0.5 dipotre

1.0 dioptre

1.5 diopter

2.0dioptre

If an object moves with velocity of light the apparent mass of the object as compared to list original mass is

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greater

Smaller

Same

zero

The working of cloud chamber is based in the presence of.

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Super heated vapours

Liquid

Super saturated vapors

Unsaturated vapours

The gravitational strength on the surface of moon is 1.6 N kg-1 What will be the mass and weight of an object respectively on the surface of the moon.

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10 kg , 1.6 N

10 Kg , 16 N

16 Kg, 10 N

16 kg, 160 N

X-rays can cause

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Malaria

Dysentery

Cancer

Blood pressure

A particle performs SHM of amplitude 0.020 and frequency 2.5 Hz. What is its maximum speed.

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0.050 m s-1

0.125 m s-1

0.314 m s-1

0.75 m s-1

The sweetness or harshness of a sound depends upon its

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Wavelength

Frequency

Amplitude

Regularity

The centre of gravity of a cylinder is.

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At the intersection of medians

At the centre

At the middle point of axis

At the intersection of diagonals

A material in which resultant magnetic moment is zero.

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Diamagnetic

Paramagnetic

Ferromagnetic

Anti ferromagnetic

When a newton's right interference pattern a viewd from above by means of reflected light , the central spot is

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Multicoloured

Alternately white and black

Bright

Dark

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

Power of lens is measured in

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cm

Metres

cm-1

Dioptres

Which material has the greatest di electric constant.

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Mylar

Glass

Germanium

Water

The temperature scale based upon triple point of water was given by

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Rumford

Carnot

Kelvin

Celsius

Contrivances for converting heat into work are called.

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Heat pumps

Heat engines

IC engines

Jet engine

A straight wire carrying current will experience a force when placed in a uniform magnetic field if

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The current and field are parallel

The current and field are at an angle

the current and field are parallel in opposite directions

All of the above

The phenomenon of interference comes about because waves obey

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the impulse momentum theorem

An inverse square law of intensity

The principle of reciprocity

The principle of super position

Mutual inductance has a practical role in the performance of the

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Radiochoke

Transformer

Generator

Trnasistor

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