Question # 1

The general theory of relativity treats problems involving

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inertial frame of references

accelerating frame of references

both of these

none of these

A 1000 Kg car travelling with a speed of 90 km/hr turns around a curve of radius 0.1 km. The necessary centripetal force comes out to be:

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8.1 X 10⁷N

625 N

6250 N

None of these

The angle between centripetal force and displacement of the body moving in a circle is:

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0°

90°

180°

None of these

A diode which can turn its current ON and OFF in nono seconds is called:

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LED

Photodiode

An ordinary diode.

Both (A) and (B)

Both (B) and (C)

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

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stethoscope

thermometer

manometer

barometer

Change in momentum is one second is called:

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Impulse

Force

Energy

Work

The pattern of crystalline solid is:

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One dimesional

Two dimensional

Three dimensional

Either (A) or (B)

None of these

The current is measured in

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volts

watt

ampere

ohm

In RLC series circuit, resonance occurs when

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X_{L > Xc}

X_{L < Xc}

X_{L = Xc}

None of these

Method "lamp and scale arrangement" used to measure the

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angle of deflection

restoring torque

magnetic field strength

current

A car battery has e.m.f 12 volt and internal resistance 5 x 10^-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

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5 volt

3 volt

15 volt

9 volt

Prefix pico stands for

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10^-9

10^-6

10^-15

10^-12

Arsenic antimony or phosphorus are impurities of

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p-type

n-type

May be p-type or n-type

None of these

The wavelength of light is 6000°A, the number of waves continued in 0.01 m distance will be

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1.6 x 10⁴

3 x 10³

2 x 10⁶

4 x 10⁸

Given that grating element = 0.2 x 10^-3cm in case of a diffraction grating. Then number of lines per centimeter will be

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500000

5000

50

5

Viscosity of gas with increase in temperature

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Decreases

Increases

No change

All

The maximum and minimum magnitudes of the resultant of two given vectors are 17 units and 7 units respectively.If these two vectors are at right angles to each other.the magnitude of their resultant is

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14

16

18

13

As we go above the surface of earth the value of 'g'

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Increase

Remain Constant

Decrease

Increase slightly

At systolic pressure, at the point the first surges of blood flow through the narrow stricture produces

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High flow speed

Sound heard

Initially turbulent

All of these

The rotational analogue of force is

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Torque

Momentum

Moment of inertia

None of these

The second law is concerned with the conversion of heat into work which the head added

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Equivalent

Greater

Lower

None of these

Which of the following atoms cannot be detected by X-ray crystallography?

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carbon

nitrogen

hydrogen

neon

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