Question # 1

When there is no relative motion between the magnet and coil, the galvanometer indicates:

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No current in circuit

An increasing current

A decreasing current

Either B or C

The resistivity of a substance depends upon the

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length

mass

area

temperature

Silicon can be obtained from

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Lead

Uranium

An isotope of oxygen

Sand

The energy of the 4th orbit in hydrogen atom is

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2.5 ev

- 3.5 ev

-0.85 ev

-13.6 ev

The combined effect of resistance and reactance in a.c. circuit is called

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conductance

resistance

impedance

choke

The electrical forces between the molecules of a liquid are

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Repulsive

Attractive

Both A and B

None

An important part of photocopier is:

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Toner cartridge

Deflection plates

Charging electrode

Print head

None of these

Pair production take place when energy ofγ-rays photon is

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equal to 1.02 Mev-

greater than 1.02 Mev

less than 1.02 Mev

none of these

The force which maintain the strict long-range order between atoms of a crystalline solid is the:

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Nuclear force

Cohesive force

Adhesive force

Coulomb force

None of these

To designate the voltage as low or 0 by a logic gate, the specified minimum value is:

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0.2 volt

0.8 volt

0 volt

2.0 volt

5.0 volt

The fourth band is a:

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Silver band

Red band

Gold band

Either A or C

Either A or B

Who gave the corpuscular nature of light

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Einstein

Newton

Maxwell

Thomas young

The burnt gas expelled from the rocket engine with

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High velocity

Extremely high velocity

Very high velocity

None of these

Which color is not used in the combination of colors for color printing?

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cyan

magenta

green

yellow

The dimensions of pressure are

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[ML²T^-2]

[ML-1T-2]

[M²LT^-1]

[M²LT^-2]

When resistances are connected in Parallel, the effective resistance will be

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Product of the reciprocals of the individual resistances

Product of the individual resistances

Sum of the reciprocals of the individual resistances

Sum of the individual resistances

Orbital velocity of an object mass m is proportional to

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m°

m²

m

m³

In case of linear deformation, the ratio of the tensile stress to the tensile strain is called

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Young's modulus

Bulk modulus

shear modulus

all of them

The capacity of a condenser when a dielectric is placed in between its plates

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Increases

Decreases

Doest not change

If the temperature difference between hot and cold body is greater the heat engine is:

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Not efficient

Less efficient

More efficient

NOne of above

The angle of incidence at which angle of refraction becomes 90⁰ is called

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Incident angle

Angle of refraction

Critical angle

Phase angle

In a container having water filled up to a height h,a hole is made in the bottom.The velocity of water flowing out of the hole is

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Independent of h

Proportional to h^1/2

Proportional to h

Proportional h²

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