Question # 1

The ability of eye to focus near as well as distant object is termed as.

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Myopia

Persistence of vision

Power of accommodation

Astigmatism

A wave which consists of a single, non repetitive disturbance is called a

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Continous wave

Pulse

Longitudinal wave

Transverse wave

The corpusclular nature of light was given by

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Huygen

Maxwell

Newton

Thomas Young

To obtain is parallel beam from the headlight of a car it must be fitted with.

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A convex mirror

A concave mirror

A convex lens

A concave lens

The SI unit of mutual induction a

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Vs-1 A-1

V m -1 A-1

Henry

Tesla

Which of the following is not a mode of radioactive decay.

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Positron emission

Electron capture

Fusion reaction

A decay

Which of the following in the best container for gas during adiabatic process.

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Copper vessel

Thermos flask

Glass container

Wooden container

The rms value of emf in a circuit is given by a factor of.

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0.637

0.7

0.707

1.11

In the direction indicated by an electric field line.

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The electric field strength must increases

The electric field strength must decreases

The potential must remain constant

The potential must decreases

In n-p-n transistor the current flows in the direction from

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Emitter to base

emitter to collector

Base to emitter

Base to collector

If the transformer turns ratio is 2 and the impedance eof primary coil is 250 Ohms then the impedance secondary coil will be.

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125 Ohms

250 Ohms

500 Ohms

1000 Ohms

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

When a force is applied on a body several effects are possible which of the following effect could not occur.

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The body speeds up

The body changes direction

The pressure on the body increases

The mass of the body decreases

According to Coulomb's law what happens to the attraction of two oppositely charged objects as their distance of separation increases.

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Increase

Decrease

Remain unchanged

Cannot be determined

Michelson's interferometer was devised in.

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1801

1825

1867

1881

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.

Young's double slit experiment was performed in

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1801

1916

1901

1934

Which one fo the following is based on the diffraction and repulsion of electric charge.

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Capacitor motor

Transformer

Induction motor

synchronous motor

The gravitational force between two bodies does not depends upon.

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The product of their masses

Their separation

The sum of their masses

The constant of gravitation

The heat accepted and rejected by a Carnot engine operating between two heat reservoirs defines.

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The efficiency of the working substance of the engine

the ideal gas scale of temperature

The ratio of the absolute temperature of the reservoirs

The thermal capacity of the working substance

If the pressure in a closed vessel is reduced by drawing some gas the mean free path of the gas molecules.

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Decreases

Remains constant

Increases

First increases then decreases

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

On which factor mutual induction of two coils does not depends upon.

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Number of turns of the coils

Area of cross section of the coils

Closeness of the coils

Shape of the coils

Which physical law expresses the relationship between the heat generated and the current through a conductor.

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Ohm's law

Kirchoff's law

Joule's law

Ampere's law

Under which of the following conditions current in a circuit is wattles.

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When inductance in the circuit is zero

When resistance in the circuit is zero

When current is alternating

When resistance and inductance both are zero

A gama ray of energy 1900 MeV is absorbed by

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Proton antiproton pair

Electron positron pair

Producing heat in the substance

The orbit

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

Which is the branch of medicine that deals with the anatomy physiology and diseases of the eye.

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Ophthalmology

Psychology

Andrology

Gynecology

The velocity of light was determined accurately by

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Newton

Huygen

Michelson

Young

X -rays are similar in nature to.

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Alpha particles

Beta particles

Gama rays

Photons

a cube with sides 2 cm long is made from a material of density 8 g cm-3 What is the mass of the code

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4 g

16 g

32 g

64 g

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