Question # 1

Which one of the following relations is correct?

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1 Wb-m²= Nm^-1A^-1

1 tesla = 104 gausses

1 Wb-m²= 1 tesla

All of the above

The ratio of energy E to the corresponding frequency (f) of the radiation (emitted or absorbed) is called:

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Wien's constant

Stefen's constnat

Planck's constant

Boltzmann's constant

None of these

Which one of the following can act approximately as a source of monochromatic light;

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Neon lamp

Fluorescent tube

Sodium lamp

None of these

If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm²will be

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1 cm

2 cm

8 cm

None

A mass of 5kg moves with an acceleration of 10m s^-2force applied is

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10N

50N

2N

20N

The vector in space has:

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One component

Two components

Three components

None of these

Monochromatic light means waves of:

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Same frequency

Same colour

Same wavelength

All of them

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

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modification

voltage

current

resistance

Which of these is not a radiation detector

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Wilson cloud chamber

cyclotron acceleration

Geiger Miller counter

solid state detector

Which of the following medium/media can transmit both transverse and longitudinal waves:

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Solids

Liquids

Gases

All of them

When velocity of moving body is doubled, the quantity which is also doubled is its:

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K.E.

Acceleration

Momentum

P.E.

At the highest point, we can claim that:

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Resultant velocity is zero

Only horizontal component of velocity is zero

Only V_yis zero

Nothing of above

The center of gravity is also called

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Centre of mass

Centre of body

Centre of force

None of these

The deformation measured in terms of some twisting angle due to action of stress is known as

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Stress

Linear stress

Compressive stress

Shear stress

When the torque acting on a system is zero, which of the following will be constant

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linear momentum

angular momentum

impulse

force

For interference to occur the two light waves should be:

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Of two different frequencies

Coming from opposite directions

Of high intensity

Monochromatic

The Dimension of Force is

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[MLT^-2]

[MLT²]

[ML²T^-2]

None of these

How many wave lengths of Kr⁸⁶ are contained in one meter

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1553164.13

652189.63

2347127.23

1650763.73

The danger signals are red while the eye is more sensitive to yellow because

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Scattering in yellow colour is less than that of red

Red light is longer in wavelength than yellow light

Scattering in red is less than that of in yellow

Red colour has greater frequency than yellow light

When temperature increases, viscosity of liquids

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Remains constant

Increases

Decreases

Becomes double

Bodies falling freely under gravity provide good example of motion under

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non-uniform acceleration

uniform acceleration

variable acceleration

increasing acceleration

When the stress change length of a body, it is called:

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Shear stress

Tensile stress

Volume stress

Any of these

None of these

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