Question # 1

The diastolic pressure of a normal healthy person is.

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120 torr

110 torr

100 torr

75-80 torr

Opted unit to measure blood pressure is.

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N/m2

Pascal

mm of Hg

N.m2

The entropy of the universe with passage of time is.

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Increases

Decreases

Remain constant

Increases and decreases

If 332 waves pass through a medium in 1 second with speed of 332 ms-1 then wavelength will be

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7 m

332 m

664 m

1 m

In simple harmonic motion the velocity of a particle is maximum at.

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Extreme position

Mean position

In between extreme and mean position

None of them

Environmental crisis are also known as

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Population crisis

Entropy crisis

War crisis

Mass crisis

When two waves having same frequency traveling in same direction combine, phenomenon is called

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Wave motion

Combination of waves

Interference

Diffraction

A Carnot engine has an efficiency of 50% when its sink temperature is at 27 ^oC. The temperature of source.

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273^oC

300 ^oC

327 ^oC

373 ^oC

A layer over the central core of the jacke is called.

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Jacket

Plastic

Cladding

Rubber

The study of fluid dynamics is

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Easy

Complicated

Impossible

None of these

The artificial satellites are held in orbits by

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Gravitational force

Electric force

Magnetic force

All of these

The accepted value for speed of light in vacuum

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2.99 x 10⁸m - sec^-1

2.99 x 10⁶m - sec^-1

2.99 x 10⁸km - sec^-1

2.99 x 10⁸m - h^-1

The value of a time period of allow flying satellite is

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1 year

84 minutes

28 hours

1 day

Teh speed of sound in air is 340 m/s. If the pressure of air is doubled then the speed becomes.

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Double

Half

Four times

Remains same

The apparent change in the pitch of sound due to relative motion is called.

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Carnot theorem

Interference

Doppler effect

Beats

The ballistic missiles are used only for

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Long range

Short range

Medium range

Constant range

A mass of 1 kg is freely falling. The force of gravity is.

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1 N

9.8 N

0.5 N

Zero

The subtraction of a vector is equivalent to the addition with

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Same direction

Perpendicular direction

Reversed direction

All of these

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