Question # 1

It the slope of velocity time graph is increasing with time the body is said to have.

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Positive acceleration

Average acceleeration

Uniform acceleration

Retardation

when a body accelerates.

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Its direction always changes

Its mass always changes

Its velocity always changes

It falls towards the earth

Which Muslim Scientist is regarded as 'Father of Optics"

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Nasir al Din al Tusi

Ibn Ishaq al kundi

Ibn Musa Al khawarzmi

Ibn al Haithem

A fixed mass of an ideal gas absorbs 1000 J of heat and expands under a constant pressure of 20 kPa from a volume of 25 x 10-3 m3 to a volume 50 x 10-3 The change internal energy of the gas is.

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500 J

1000 J

-1000 J

Zero

Induced current in a circuit depends upon

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The speed with which the conductor moves in the magnetic field

Resistance of the loop

Direction of the loop

Shape of the loop

Which following properties of molecules of a gas is same for all gases at a particular temperature.

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Momentum

Mass

velocity

K.E.

The ration Cv/Cp = y for a diatomic gas like air is

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1.29

1.30

1.40

1.67

The image of an object 5 mm high is only 1 cm high. The magnification of the lens is

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0.2

0.5

1

2

What is shapes of a pure note

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Sinwave

Sawtooth

Square wave

Triangular wave

Optics is the

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Scientific study of light and vision

Scientific study to sound

Scientific study of time

Scientific study of fluid

Which of the following thermometers is the most suitable for measuring rapidly varying temperature.

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Thermocouple thermometer

Mercury in glass thermometer

Alcohol in glass thermometer

Platinum resistance thermometer

A charged capacitor has charge on its

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Outside surface

Inner surface

Surroundings

Mid point

The point of which an applied force produces a linear acceleration but no rotation is called.

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Centre of the body

Centre of the mass

Centre of gravity

Weight of the body

Radioactive substances do not emit

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Alpha particles

Beta particles

Gama rays

Neutrons

a 5 kg mass is falling freely the force acting on it will be.

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0 N

9.8 N

5 N

19.6 N

The ratio of specific heat capacity to motor heat capacity of a body

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Is a universals cantante

Depends upon the mass of the body

Depends upon the molecular weight of the body

Is dimensionless

A single quantum of electromagnetic radiation is termed as.

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Compton

Photon

Hyperon

Meson

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

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hadrons

Photons

Leptons

Nucleons

When a current of 2 A flows for 5 s through a lamp 120 W of power are used How much charge flows through the lamp.

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10 C

12 C

24 C

60 C

A spectroscope sorts out

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Atoms

Molecules

Elements

Isotopes

The constant lamda is called the.

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Decay constant

Gas constant

Planck's constant

Dose constant

When a ray of light travelling in a denser medium enters into a rarer medium.

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It remains undeviated

It is reflected back

It bends towards the normal

It bends away from the normal

Pressure of a gas depends upon

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Only on the molecular speed

Only on the speed of molecules on a unit volume

Only on the mass of molecules

Number of molecules mass and speed in a unit volume

When a person holding a pall is moving in the forward direction, the work done on the pall is

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Positive

Negative

Zero

Equal to gravity

The power of convex lens is 10 d. At what distance the 3 times larger image is formed.

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9.6 cm

2.3 cm

13.3 cm

17.6 cm

The corpusclular nature of light was given by

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Huygen

Maxwell

Newton

Thomas Young

The part of theory of relativity which deals with accelerated bodies is called.

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special theory of relativity

General theory of relativity

Lorentz's theory of relativity

Galilean theory of relativity

Impulse is equal to.

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F x t/2

\F x t /4

F x t

F x t /m

LASER is a device which can produce

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Monochromatic beam of light

Coherent beam of light

An intense beam of lgiht

All of these

Why is a capacitor resistor combination used in oscillators in grid circuit.

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To generate oscillation

To bias the grid automatically

To amplify oscillations

To sustain the oscillations.

Which of the following does not reflect the laws of static charges.

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like charges repel

Opposite charges attract

Neutral charges repel

Neutral objects are attracted to charged ones.

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