Question # 1

An important part of photocopier is:

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Toner cartridge

Deflection plates

Charging electrode

Print head

None of these

The energy of photon 'E' is proported to

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The magnetic field H

The electric field E

Both the electric and magnetic field H and E

Frequency

The internal pressure of the blood is

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less than the external atmospheric pressure

greater than the external atmospheric pressure

equal to the external atmosphericpressure

none of them

The product of induced current and the resistance of the wire through which the current is passing is called:

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Electromagnetic induction

induced emf

Induced current

Self induced

None of these

The locus of all points in a medium having same phase of vibration is called

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Crest

Trough

Wavelength

Wave-front

The magnetism produced by electrons within an atom can arise from

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electrons orbiting the nucleus

electrons posses a spin

both motions

none of these motions

When a platinum wire is heated, it appears dull red at about

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500°C

900°C

1100°C

1300°C

The critical temperature of aluminium is

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1.18 K

4.2 K

3.72 K

7.2 K

Free oscillations are always produced by:

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An applied force

Gravitational force

Restoring force and inertia

Inertia only

Work is a Quantity

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Vector

Scalar

Non-physical

None of these

Maric Curie and Pieree Curie discovered two new radioactive elements, which are called

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polonium uranium

uranium and radium

polonium and radium

none of these

Can the magnitude of a vector have a negative value ?

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No

Yes

yes in same cases

None of these

Isothermal temperature Isobaric?

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Pressure

Volume

Heat

Entropy

Total area of cross section is 0.25 m². If blood is flowing at rate of 100 cm³ /s then average velocity of flow of blood through capillaries is

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4mm/s

0.4mm^-1

400mms^-1

None

If the resultant of n forces of different magnitudes acting at a point is zero, then the minimum value of n is

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1

2

3

4

One a clear day at noon, the intensity of the solar energy reaching the Earth surface is about

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1 KWm^-1

2 KWm^-2

3 KWm^-2

None of these

The methods used for the conversion of biomass into fuels are

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Fermentation

Direct combustion

Direct sunlight

a & b

In which process the P - V diagram is a straight line parallel to volume axis

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Isobaric

Isothermal

Isochoric

Adiabatic

If the line of action of force F passed through the axis of rotation or origin then its torque is

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Maximum

Minimum

Zero

None of these

A disc roll down a hill of 10.0 m from rest without slipping. What is its speed at the bottom

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10.2 ms^-1

11.3 ms^-1

11.4 ms^-1

None of these

In order to increase the K.E of ejected photo electrons, there should be an increase in:

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Intensity of radiation

NoneI

Frequency of radiation

Both (b) & (c)

A motor runs at 20 rev/s and supplies a torque of 75Nm. Power delivered by it is

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6.12 hp

12.6 hp

7.3 hp

8.3 hp

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