Question # 1

The number of LED'S needed to display all the digits is:

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Four

Five

Nine

Six

Seven

Which of the following is a characteristic of an ideal fluid?

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it is non-viscous

it is incompressible

it's motion is steady

all of the above

Pressure applied at any point of gas at rest is transmitted equally to all parts of the gas. This is the statement of:

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Newton's second law

Pascal's law

Carnot theorem

Second law of thermodynamics

Davision and Germer performed experiment to verify

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de-Brogile hypothesis

theory of relativity

Newton's law of gravitation

Mass-energy relation

In case of metallic conductors, the charge carriers are

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Protons

Electrons

Antiprotons

Positrons

Both A and B

For a parallel resonant circuit at resonance, current from supply is

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minimum

maximum

zero

none of these

Most practical applications of electricity involve

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Charges at rest

Charges in motion

Electrons at rest

Atoms in motion

Molecules in motion

The e/m of an electron moving in a circular path in a magnetic field is equal to

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V/Br

V/B²r²

V²/Br²

V²/Br

If a process cannot be retraced in the backward direction by reversing the controlling factors, it is

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a reversible process

an irreversible process

any one of them

both of them

Resolving power in mth order diffraction for grating is given by:

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R = N/m

R = m/N

R = N x m

None of these

The SI unit of magnetic induction is tesla which is equal to

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Newton/ampere-meter or N/A-m

Newton/ampere²-meter or N/A²-m

Newton/ampere²-meter² or N/A²-m²

Newton/ampere²-meter²or N/A²-m²

SI unit for moment arm is

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Nm^-2

Nm

Kg ms²

None of them

If the mass and radius of a planet are doubled, then acceleration due to gravity on its surface will become

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One fourth

One half

Double

Four times

Impulse is the force applied for a very short interval time in which force is

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Constant

Not constant

May be constant for some time

None of these

Where in standing wave, do the vibrations of the medium occur?

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Only at the nodes

Only at the antinodes

At all points between the nodes

At all points between the antinodes

A force of 10N is required to move a body with a velocity 10 ms^-1the power developed is

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10 W

50 W

100 W

1000 W

If a ball comes back to its starting point after bouncing off the wall several times, then its

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total displacement is zero

average displacement is zero

none of them

both of them

A double convex lens act as a diverging lens when the object is

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Inside the focus

Between f and 2f

At the focus

At a large distance

The frame of reference in which Newton's first law of motion holds is known as

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Inertial frame of reference

Non-inertial frame of reference

Every frame of reference

None of these

In Young's double slit experiment, the fringe width depends on

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wavelength of the light used

distance between the slits and screen

distance between the slits

all of them

Shear modulus for aluminium is

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30

70

80

90

2π radian is equal to the degrees

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180^o

90^o

360^o

None of these

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