Question # 1

Gas law PV = constant is for

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Adiabatic change

Isothermal changes

Isobaric changes

Isochoric changes

The escape velocity

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Is independent of mas of the body

Increases with the increases of mass of the body

Decreases with the decreases of mass of the body

Depends upon the type of body used

In a compound microscope magnification will be large if focal length of eyepiece is

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Large

small

Equal to that of the objective

Larger than that of the objective

When a ray of light enters a glass slab from air

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Its frequency increases

Its wavelength increases

Neither frequency nor wavelength change

Its wavelength decreases

In Compton's effect it was considered that X-rays consist of

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Electrons

Holes

Neutrons

Protons

In which reaction two or more small light nuclei nuclei come together or fuse to form a large nucleus.

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Radioactivity

Radioactivity dating

Nuclear fusion

Nuclear fission

When light emitting diode is forward biased, it emits light of the colour

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Red

Yellow

Green

All of these

What for is semiconductor diode used.

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To convert D.C. to A.C.

To convert A.C. to D.C.

To increase voltage

To decrease voltage

The two elements with same number of electrons but different mass number are called.

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Isotones

Isobars

Isotopes

Isomers

Which of the following quantities associated with SHM does not vary periodically.

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velocity

Displacement

Acceleration

Total energy

The variation in the speed of sound with temperature is greater in.

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Gases

Metals

Liquids

Insulators

The SI unit of plane angle is

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Radian

Degree

Steradian

Radian per second

Which of the following parameters is irrelevant for a fuse wire.

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Its radius

Current flowing through it.

Its specific resistance

Its length

Lagging of magnetic flux density behind the magnetizing fled is known as.

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susceptibity

Diamagnetism

Hysteresis

Retentivity

Gauss's law a most useful in cases where the charge distributions.

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Are made up of discrete point charges

Are finite in their spatial extent

Give rise to inverse square law fields

Posses a certain amount of symmetry

Positron was discovered by

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Wilson

Anderson

Dirac

Stefan

The Lenz's law is also a statement of the law of conservation of.

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Energy

Mass

Momentum

Torque

In onw cycle of a steam engine there are how many dead centres.

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1

2

3

zero

Materials that experience a force from stronger to weaker regions of magnetic field are called.

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Non magnetic

Paramagnetic

Ferromagnetic

Diamagnetic

Which of the following is not SI base unit.

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kilogram

Ampere

Coulomb

Mole

Conservation of energy means that

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Energy can be destroyed but not created

Energy can be created but not destroyed

energy cannot be created and destroyed

Energy can neither be created nor destroyed

On which characteristics the loudness of sound pends upon.

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Pitch

Speed

Wavelength

Amplitude

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 radius of second orbit of hydrogen atom is

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0.071 A

0.142 A

4.752 A

9.5298 A

The aberration in the image formed by a lens due to different wavelengths present in a source is called.

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Spherical aberration

Chromatic aberration

Astigmation

Achromatic aberration

The term used for heat capacity per unit mass is.

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Latent heat

Specific heat

Energy density

Specific energy

If we double both the current and the voltage in circuit while keeping its resistance constant the power.

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Remains unchanged

Halves

Doubles

quadruples

When a liquid is hated retaining its liquid sate then its molecules gain.

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K.E.

P.E

Heat energy

Chemical energy

The quality of a note

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Decreases with loudness

Varies directly as its pitch

Varies inversely as its pitch

Depends upon the overtones

The same notes being played on sitar and veena differ in.

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Pitch

Quality

Both quality and pitch

Neither quality nor pitch

A complete amplifier circuit made on a silicon chip and enclosed in a small capsule is

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Inductor

Metal detector

Diode

Operational amplifier

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