Question # 1

Faraday's law deals with

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Induced emf

Motional emf

Induced current

Electric current

The loudness of a sound depends on its

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Wavelength

Frequency

Wave amplitude

Regularity

Which of the following devoices are used for measuring temperature.

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Thermocouples

Thermistors

Thermometers

All of these

The magnitude of resultant of three forces is 3. Its x -component is 2 and y component is 1, then its z-component will be.

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1

2

3

4

One calorie equals to

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1.2 J

2.2 J

3.2 J

4.2 J

Mosley's law establishes the x rays fluorescence's of target element with its.

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Atomic weight

Atomic number

Density

Lattice constant

What would be the colour of sky n the absence of atmosphere.

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Blue

Indigo

Red

Black

What is the range of values of power factor.

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0 to -1

0 to +1

0 to 2

2 to 3

If 'p' is the momentum of an object of mass 'm' the expression p2/m has base units identical to.

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Power

Force

Velocity

Energy

The locus of all points in the same state of vibrations are known as.

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half period zone

A wavefront

A half wave zone

A full wave zone

A body is thrown vertically upward with initial velocity 9.8 ms-1 it will reach the height.

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4.9 m

19.9 m

29.4 m

49.2 m

Which both elements are good for nuclear fission.

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Thorium an uranium

Thorium and radium

Plutonium and uranium

Plutonium and throrium

A logic circuit whose output signal is '1' when inputs are different is.

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NAND gate

NOR gate

Exclusive OR gate

Exclusive NOR gate

The energy in electron volts necessary to remove the most loosely bound electron from the neutral atom is known as.

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Faraday energy

Wave number

Ionization Potential

Excitation potential

Under steady state the temperature of a body

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Increase's with time

Decreases with time

Does not charge with time

None of the above

A generator running in reverse may be called as.

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A.C. Generator

D.C. generator

Motor

Commutator

A perfect gas is one whose

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Molecules are masless

Molecules are energetic

Molecules are perfectly elastic

Molecules are at rest

The ionization potential of hydrogen atom is.

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10.2 V

13.6 V

12.97 V

27.2 V

Certain gas are called permanent gases because.

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They cannot be liquified

They are perfect gases

The critical temperatures are low

their boiling points are low

At the temperature of -273 ^oC. pressure of a gas at constant volume becomes zero This specific temperature is called.

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Freezing point

Critical temperature

Absolute zero

Terminal point

The most abundant isotope of neon is.

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Neon -20

Neon -21

Neon -22

Both a and c

A bulb of 100 W is connected to a 160 V supply What will be the power consumed.

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25 W

30 W

50 W

64 W

A young man wearing glasses does not require bifocals because he

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Is farsighted

Has the ability to accommodate

Is short signed

Does not suffer from coma

Which incapability of the materials is represented by the phenomenon of hysteresis.

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Magnetic saturation

Low susceptibility

Retrace the path

Orientation

A device used to measure the strain of an object and it is a type of resistor that changes value with applied strain is a

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thermistor

Strain gauge

Thermocouple

Potentiometer

Which of the following is renewable source of energy.

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Oil

Natural gas

Uranium

Sunlight

The circuit in which current and voltage are in phase the power factor is.

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Zero

Unity

Double

4 times

Sub atomic paticles whihc does not experience strong nuclear force are.

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hadrons

Photons

Leptons

Nucleons

Which of the following a natural example of a capactor.

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Fire

Snow

Air

Lightining

At high temperature a body generally emits redactions of.

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Small wavelengths

Long wavelengths

Moderates wavelengths

Zero wavelengths

Which of the following is used for reducing spherical aberrations in optical instruments.

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Plano convex lens

Concave lens

Spherical mirrors

Piane mirrors

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