Question # 1

The law of conservation of energy gives us

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equation of continuity

Bernoulli's theorem

both of them

none of them

At the temperature, a body emits radiation which is principally

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of long wavelengths in the visible region

of long wavelengths in the invisible infrared region

of short wavelength in invisible ultraviolet region

none of these

The mechanics, which deals with the objects moving with velocities approaching that of light is called:

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Relativistic mechanics

Wave mechanic

Quantum mechanics

Statics

In describing functions of digital systems, a closed switch will be shown as

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0

1

low

any one of these

Within each domain, the magnetic field of all the spinning electrons are

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parallel

antiparallel

perpendicular

all of them

The henry is the unit for

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Resistance

Magnetic flux

Magnetic field

Inductance

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

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frequency of S.H.M

period of S.H.M

wave form

none of them

Arsenic, antimony and phosphorus are the elements from

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third group

fourth group

fifth group

none of them

The velocity of sound in air not effected by changes in

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Moisture contents in air

Temperature of air

The atmosphere pressure

The composition of air

The time period of a simple pendulum is independent of its:

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Length

Mass

Value of g

Both A and B

Slope of velocity time graph is

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Speed

Work

Power

Acceleration

The conductivities of conductors (metals) have

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10⁵ (Ω)^-1

10⁷ (Ωm)^-1

10⁸ (Ωm)^-1

10⁹ (Ωm)^-1

The ballistic missiles are useful for

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Short ranges

Long ranges

Medium ranges

None of these

A boat which has a speed of 5 km/h in still water crosses a river of width 1 km along the shortest path in 15 minutes.The velocity of the river in km/s is:

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1

3

4

√41

The approximate efficiency of dry cell battery is

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80%

90%

70%

50%

The original source of hydroelectric is

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Water

Wind

Sun

Moon

Satellites are objects that orbit around the

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Sun

Planet

Earth

None of these

For assessment of total uncertainty when added or subtracted the absolute uncertainties are

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Multiplied

Divided

Added

Subtracted

The nature of capacity of electrostatic capacitor depends on

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Shape

Size

Thickness of plates

Area

According to WH Bragg and WL Bragg monochromatic beam of X-rays was reflected form a crystal plane is like a

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Smooth and regular

Mirror

Thin film

None of these

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