Question # 1

The ration of intensity of magnetization to the magnetic force is known as.

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Parmeability

Magnetic induction

Magnetic intensity

Magnetic susceptibility

In what form is the energy stored in an inductor.

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Magnetic

electrostatic

Magnetic and electrostatic

All of the above

A radiation spectrum which is continuously distributed over a frequency region without being broken up into lines or bands is known as.

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Continuous spectrum

Band spectrum

discrete spectra

Absorption spectrum

A charge kept at the centre of a shell The shell has charge Q and radius R The force on the central charge due to shell is

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in the upward direction

Towards left

Towards right

Zero

When a positive charge is allowed to move from positive to negative plate, then it will gain

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P.E.

K.E

Gravitational energy

Electrical P.E.

The erecting lens of a telescope produces

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A shorter instrument

wider field of view

A larger image

A sharp image

When Electric current flows through the wire it increases.

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P.E of the atoms

K.E. of the atomss

Atomic size

Number of protons

A diverging lens may not have

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Negative focal length

Positive focal length

One plane surface

One convex surface

Which uranium isotope having the atomic weights as given below is easily fissionable.

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234

235

236

238

A heat engine with 100% efficiency would have to

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Do no work

Be at a uniform temperature

Use no heat

Discharge at 0^oC

For an A.C. circuit the power factor is

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Always les than one

Always greater than one

Always equal to one

Absent

The permeability of a diamagnetic material is

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Greater than unity

Less than unity

Equal to unity

Zero

If an object moves with velocity of light the apparent length of the object moving the direction of motion becomes.

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Larger

Smaller

Zero

Infinity

Which one the following is not a component of a Bipolar junction Transistor

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Base

Emitter

Collector

Grid

X-rays eject electrons from matter by

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Pair production

Pair annihilation

Compton effect

Photoelectric effect

Usually in an operational amplifier the inputs used are of

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Equal voltage and same polarity

Equal voltage and opposite polarity

Different voltage and same polarity

Different voltage and opposite polarity

Which of the following can be used as an arrester in a nuclear reactor.

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Graphite

heavy water

Uranium

Cadmium

What do we study by crystallography.

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The analysis of X ray spectra of elements and study of crystal structure.

Visible spectra of sources and crystal study

Ultraviolet spectra of sources and crystal study

Characteristics of X-rays

The main advantage of step index fiber is.

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The size of the cable

The equality of the cbale

Difference in the wavelengths of signals

All of the above

The phenomenon of Compton's effect process that right has

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Wave nature

Particle nature

Dual nature

Corpuscular nature

A large ripple tank with a vibrator working at a frequency of 30 Hz produce 25 complete waves in a distance of 50 cm. The velocity of the wave is.

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9.53 cm s-1

60 cm s-1

750 cm s-1

1500 cm s-1

Which of the following should not change in an Isothermal process.

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Volume

Pressure

Temperature

All of these

A newly prepared radioactive nuclide has a decay constant Lamda of 10-6 s-1 What is the approximate half life of the nuclide.

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1 hour

1 day

1 week

1 month

In planetary motion

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Angular speed remains constant

Angular momentum remains constant

Linear speed remains constant

Linear momentum remains constant

A pure capacitor is connected in an AC circuit The power factor of the circuit will be.

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Unity

Infinity

0.5

Zero

A sheet of transparent material with fine equality spaced lines ruled parallel on its surface is called.

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Interferometer

Grating element

ruler

Patch

High concentration of red blood cells increases the viscosity of blood from

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2 -3 time's that of water

3-4 times that of water

3 - 5 times that of water

4 -5 times that of water

The mechanical equivalent of heat

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Has the same dimension as heat

Has the same dimension as work

Has the same dimensions as energy

Is dimensionless

Which quantity has dimensions different from the others.

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Energy per unit volume

Force per unit area

Angular momentum per unit mass

Pressure

The critical angle will be maximum when light travels from

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Glass of air

Water to air

Water to glass

Glass to water

Deuterium is

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A transuranic element

A type o cosmic particle

An isotope of hydrogen

An isotope of helium

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