Question # 1

If a body of mass 'm' was released in a vacuum just above the surface of a planet of mass M and radius R what will be the gravitational acceleration.

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GmM/R

GM/R²

GM/R

GM/2R

In a magnifying glass, the objective is placed at a distance

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Less than the focal

Between the focal length and twice the focal length

Greater than twice the focal length

At the focus of the lens

Who studied the change in velocity with the help of geometry for the first time.

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Nicole Oresme

Galileo

Alberuni

Ibn al haithem

A person suffering from short sighted ness uses

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Concave lens

Convex mirror

Convex lens

Concave mirror

Why should household appliances be connected in parallel with the voltage source.

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To increase the resistance of the circuit

To decreases the resistance of the circuit

To provide each appliance the same voltage as the power source

To provide each appliance the same current as the power source.

Refractive index of a medium is define das.

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speed of light in vaccum/speed of light in medium

Speed of light in medium/Speed of light in vacuum

Speed o flight in air/speed of light in medium

Speed of light in medium/Speed of light in air

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 critical mass of a fission reaction is.

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The mass to start a nuclear fission reaction

The minimum mass for chain reaction

The size of the reactor core

The size of fuel plus the size of moderator

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

A man in an elevator descending with an acceleration will conclude that his weight has

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Increased

Decreased

Constant value

Zero value

If a body a moving with constant acceleration the velocity time graph will be a

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zig zag

Straight line

Constant value

zero value

At room temperature the p.d. between the two sides of depletion region for germanium is of the order of.

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0.3 V

0.5 V

0.7 V

0.9 V

Choose the one which acts as single inverter.

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Common emitter

common collector

Common base

Diode

The particles equal in mass or greater than protons are called.

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Mesons

Bosons

Baryons

Nucleons

Which was the transparent front part of the eye that covers the pupil, iris and interior chamber.

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Cornea

Fovea

Sclera

Choroid

Which type of microscope was the first to be developed.

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Optical microscope

Digital microscope

Electron microscope

All were developed at the same time

Which of the following is an example of negative work.

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a thrown up cricket ball

Grass mower

A car on road

Bucket in the well

Frequency less than 120 Hz are known as

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Infrasonic

Ultra sonics

Super sonics

Infrared

The hydrogen filled balloon possesses

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P.E

K.E

Heat energy

Elastic energy

When the battery is being charged its terminal potential difference than its emf is.

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Less

Greater

Double

Squared root

Monochromatic light passing through a thick prism is.

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Polarize

Disperesed

Diffracted

Deviated

Push pull amplifiers employ

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One transistor

Two transistors

Three transistors

Four transistors

Which of the following SI units is not named after any physicist.

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Hertz

Joule

Volt

Candala

When Photon incident on a metal produce the emission of electrons the process is called.

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Photo electric effect

Pair production

x-rays production

Gama ray production

The venturimeter is an instrument used for measuring the

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Viscosity of a liquid

Flow speed of a liquid

Compressibility of a fluid

Specific gravity of a liquid

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

The nib of fountain pan is split of convey ink down the nib by the phenomenon of.

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Adhesion

Cohesion

Osmosis

Capillary

The material of an electromagnet should have high

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Permeability

susceptibility

Retentivity

Hysteresis loss

A pendulum vibrates with a time period of 1 s which range of sound is produced by it

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Audible

Infrasonic

Ultrasonci

Super sonic

The actual gas can behave like an ideal gas at

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Low density and high pressure

High density and high pressure

Low density and low pressure

High density and low pressure

Which is the famous standard model of the universe.

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the big bang

Casmos

Astronaut

The small stap

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