Question # 1

To display a digit of EIGHT, the number of ON LED'S are:

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Two

Three

Five

Seven

Eight

The gavanometer constant of a moving coil galvanometer is given by

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K=BAN/C

K=BN/CA

K=NAC/B

K=C/BAN

The velocity of light in vacuum can be changed by changing

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Frequency

Amplitude

Wavelength

None of these

In vibrational motion(SHM)

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P.E remains conserved

Average K.E remain constant

Neither P.E nor K.E remains constant

Total energy remains constant

the symbol to be used in relativity problems denotes:

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Dilated time

Proper time

Life time

Half time

None of these

when the deformation produced in the material become permanent, this type of behaviour is called

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proportionality

elasticity

plasticity

none of them

The unit of work in CGS system is

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Joule

Erg

Dyne

Watt

Newton's first law is also called:

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Law of torque

Law of force

Law of inertia

None of these

The density of water is 10³kg/m³. The water pressure on a submarine is 2.0 x 10⁷N/m². The depth of the submarine below the surface of the water, in maters, is approximately

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200 m

11000 m

2000 m

8000 m

A non-inertial frame of reference is one, in which

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law of inertial is valid

all laws of physics are the same in all frames

a>0 or a<0

a=0

The ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called

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Mutual induction

Mutual inductance

Capacitance

Self inductance

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10^-19N, is

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25

225

625

1250

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

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No current in the circuit

An increasing current

A decreasing current

A constant current

Either B or C

In gases, the charge carries are:

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Electrons

Positive ions

Negative ions

Both (A) and (C)

Both (A) and (B)

An inertial frame is that frame in which

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a>0

a=0

a<0

none of these

Wave length of light, on the average, is given by:

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10^-14_m

10^-10_m

10^-6_m

10^-4_m

If the acceleration of a body is negative, then slope of the velocity-time graph will be:

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Zero

Positive

Negative

Infinity

For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to

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Four times

Thrice

Once

Twice

For a fixed force, larger is the mass of a body the

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greater is its acceleration

smaller is its acceleration

smaller is its weight

zero is its acceleration

The charge carries in the electrolyte are:

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Positive ions

Negative ions

Either (A) or (B)

Both (A) and (B)

Neither (A) nor (B)

When velocity of moving body is doubled, the quantity which is also doubled is its:

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K.E.

Acceleration

Momentum

P.E.

The analysis of fluid motion becomes simplified by using

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law of conservation

law of conservation of energy

both of them

none of them

At the starting point of the free fall motion of an object, its acceleration will be

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maximum

minimum

zero

none of them

The work done on the system by the environment is considered as

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positive

negative

zero

any one of them

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

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greater than the frequency of applied force

equal to the frequency of applied force

less than the frequency of applied force

all of them

Acceleration in a body is always produced in the directin of:

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Velocity

Weight

Force

Botha B and C

Smaller the damping, the resonance will be

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more flat

more sharp

both of them

none of them

In a coil current change from 2 to 4 A in .05 s. If the average induced emf is 8V then coefficient of self-inductance is:

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0.2 henry

0.1 henry

0.8 henry

0.04 henry

The amount of energy equivalent to 1 a.m.u is

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9.315 Mev

93.15 Mev

931.5 Mev

2.22 Mev

In n-p-n transistor, emitter base junction is kept

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reversed

forward biased

may be reversed or may be forward biased

none of these

One complete round trip of the body about its mean position is called

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displacement

vibration

a complete motion

an acceleration

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