Question # 1

Blood is

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A compressible fluid

an incompressible fluid

Non viscous fluid

Not a fluid

The distance between the optical centre and principal focus is

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Focal plane

Focal length

Optical centre

Principal axis

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 product of two non zero numbers is.

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A vector quantity

A unit vector

Always zero

Never equal to zero

Self inductances of solenoid is

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Directly proportional to the current flowing through the wire

Directly proportional to its length

Inversely proportional to area of corss section

Directly proportional to number of turns

The process of combining low frequency signals with high frequency radio waves is called.

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Modulation

Resonance

Fluctuation

Amplitude

One calorie equals to

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1.2 J

2.2 J

3.2 J

4.2 J

According to Max. Planck, energy is released or absorbed in discrete packets called.

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quanta

Meson

Energy shells

Position

If the specific latent heat of vaporization of oxygen is 214 kJ kg-1 how much heat will be absorbed when 3.0 kg of oxygen is boiled off at its boiling point.

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14 kJ

64 k J

140 kJ

642 k j

Two wires P and Q each of same length and the same material are connected in parallel to a battery The diameter of P is half that of Q What fraction of the total current passes through P.

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0.02

0.25

0.33

0.50

What makes the air coming out of a punctured tyre cool.

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Isothermal expansion

Adiabatic expension

Flow at high speed

Atmospheric pressure

The mass of an alpha particle is.

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2 u

4 u

6 u

8 u

48 days after the receipt the amount of iodine -131 left behind is only.

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0.1325 g

0.2135 g

0.3125 g

0.1235 g

Velocity of sound in air at a given temperature.

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Increases with increase in pressure

Decrease with increases in pressure

Is independent of pressure

Becomes quadruples

The Inner electrons in heavy atoms can be disturbed and dislodged by.

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X rays

Alpha particle

Beta particles

gama particles

In microwave ovens, heating is produced by the phenomena of

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Reflection

Refraction

Damped oscillations

Resonance

In gases, the charge carriers are.

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Atoms

Molecules

Electrons only

Ions and electrons

Which of the following a natural example of a capactor.

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Fire

Snow

Air

Lightining

An ideal voltage source has zero.

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Current

Electromotive force

Voltage

Internal resistance

What are the dimensions of coefficient of velocity of

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[MLT-1]

[ML-1T-1]

[ML-2T-1]

[MLT-2]

A capacitor of capacitance F micro is fully charged from a 20 V d.c supply what is the energy delivered by 20 V supply.

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2 mJ

10 m j

20 mJ

25 mj

In four stroke cycle the crank makes

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One complete revolution

Two complete revolutions

three complete revolutions

Four complete reveolutions

When transvers wave travelling in a less dense medium is reflected at an interface will a more dense medium.

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A trough becomes a crest

There is no phase shift

There is phase shift of 360 ^o

A crest remains a crest

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

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Magnetic saturation

Low susceptibility

Retrace the path

Orientation

Which of the following properties of light does not very with the nature of the medium.

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Amplitude

Frequency

Wavelength

Time period

The closed end of an organ pipe having longitudinal stationary waves in it behaves as

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Antinode

Source of waves

Node

Antinode

A galvanometer can be converted into voltmeter by connecting in series with the galvanometer a

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Low resistance

High resistance

Resistance of intermediate range

Shunt

The direction of induced e.m.f in a circuit is in accordance with conservation of.

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Mass

Charge

Momentum

Energy

What invention is generally referred to as the first capacitor.

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Mason Jar

Kleist Jar

Layden Jar

Ohm Jar

A real object paled inside the focus of a convex lens gives

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Real image but diminshed

Real image but enlarged

virtual image but diminished

Virtual image but enlarged

A breaker is full of water with an ice piece floating The ice place has a lead piece in it When ice cube mells then.

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Water overflows

Level falls

Level remains unchanged

Density increases

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