Question # 1

The resistance of a wire does not depend upon.

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Area of cross section of the wire

Length of the wire

Temperature of the wire

Current passing though the wire

A 100 kg box is pulled 10 m across a frictionless horizontal surface by a 50 N force The change in the P.E. of the box a

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0 J

2 J

20 J

50 J

The current passing through the switch s will be

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Zero

3 A

4.5 A

10 A

The SI unit of magnetic flux is

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gauss

Maxwell

Oersted

Water

Binding energy per nucleon is.

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Greatest for heavy nuclei

Least for heavy nuclei

Greatest for light nuclei

Greatest for medium weight nuclei

The SI unit of density is.

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kg m2

kg m-2

kg m-3

kg m2 s-2

The loudness of a sound deepness on its

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Wavelength

Frequency

Wave amplitude

Regularity

The number 0.02 x 10^-8in standard form will be written as.

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2 x 10^-10

2 x 10^-8

20 x 10^-8

20 x 10^-6

A spectroscope sorts out

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Atoms

Molecules

Elements

Isotopes

Infrared radiation is also known as

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Radio signals

Heat radiation

Magnetic resonance waves

RADAR

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

Neil Bohr made his three postulates in.

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1897

1905

1913

1921

The exitance of more than one distinct state with the same energy is called.

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Exigency

Degeneracy

Normally

Emergency

The weight of a man in an elevator moving down with an accelerating of 9.8 m s-2 will be come

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Half

Zero

9.8 N

Double

The average amount of energy transported by a wave per unit area per unit time is termed as

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Wave speed

Wave intensity

Wavelength

Wave amplitude

The electromagnetic waves propagated outing space from antenna of a transmitter are known as.

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Infrared waves

Light waves

Radio waves

X-rays

The function of collimator in spectrometer is to

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Disperse the light

Reflect the light

Make the light parallel

Diffract the light

The focal length of a thin converging lens is 10 cm What is the maximum distance from the lens that the object can be placed so that the lens acts as a magnifying glass.

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5 cm

10 cm

15 cm

20 cm

The ratio of the rms value of the applied voltage to the rms value of resulting A.C. is called.

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Reluctance

Impedance

Reactance

Resistance

The resistance of a capacitor when it is connected with a battery is.

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Zero

Finite

Infinite

The same

The absorption of X-rays in a given material follows.

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A parabola path

Is straight line

An exponential curve

A circle

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

When the velocity of body is doubled which one is doubled too.

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K.E.

P.E

Momentum

Acceleration

Magnetic fields do not interact with

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Stationary electric charges

Stationary permanent magnets

Moving electric charges

Moving permanent magnets

Linear magnification is equal to the ratio of.

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Size of the object to the size of the image

Size of the image to the size of the object

size of the object focal length

Size of the image focal length

An active component of an electronic circuit consisting of a small block of semiconducting material to which at least three electrical contacts are made is known as.

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Rectifier

Amplifier

Thermocouple

Transistor

A p-type material is formed then a semiconductor is doped with

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Trivalent impurity

Tetravalent impurity

All of above

A material having excess of free electrons

Light rays after passing through is concave lens.

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Bend away from principal axis

Bend towards principal axis

Remain undeviated

Travel parallel to the principal axis

The phenomenon of interference occurs because waves obey

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Laws of reflection

Principle of super position

Laws of motion

Inverse square law of intensities

The output of a generator which uses a split ring commutator is.

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sinusoidal A.C. wave

Pulsating D.C. wave

Constant D.C Voltage

Linerly increasing voltage.

The angular frequency time period and frequency in SHM not depend upon.

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Mass

Force constant

Amplitude

Restoring force

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