Question # 1

Thermistors are prepared under

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High pressure and low temperature

High pressure and high temperature

Low pressure and low temperature

Low pressure and high temprature

None of these

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

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A - Z

A + Z

Z

A

A point on the rim of a wheel moves 0.2 m when the wheel turns through an angle of 14.3 degrees. The radius of the wheel is:

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0.05 m

0.08 m

0.8 m

0.008 m

If we increase the distance between two plates of the capacitor, the capacitance will

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Increase

Decrease

Remain same

First increase then decrease

In an interference pattern of Young's double slit(YDS) experiment:

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Bright fringesare wider than dark fringes

Dark fringes are wider than bright fringes

Both dark and bright fringes are of equal width

Central fringes are wider than the outer fringes

Marie curie and Pierre curie discovered:

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Uranium

Polonium

Radium

Both (A) and (C)

Plutonium

Consider a photon of continuous X-ray and a photon of characteristics X-ray of same wavelength. Which of the following is/are different for the two photons

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Frequency

Penetrating power

Energy

Method of creation

The vector is space has:

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One Component

Two Compnents

Three Components

Non of these

Amplitude in SHM is equivalent to_____ in circular motion:

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Diameter

Radius

Circumference

None of these

Watt x second is unit of:

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Force

Work

Power

None of these

Viscosity of water is ______ that of air but ___ that of plasma.

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More, more

Less, more

Less, less

More, less

If the earth suddenly stops rotating the value of 'g' at equator would:

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Decrease

Remain unchanged

Increase

Become zero

With a graded index fibre, the overall time difference between all the wavelengths arrived at the other end may be about

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1 ns per km

10 ns per km

43 s per km

33 ns per km

Vector A lies in XY plane. For what orientation with both of its rectangular components be negative ?

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I-quadrant

II-quadrant

III-quadrant

None of these

In semiconductors at 0 K the valence band is

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Completely filled

Partially filled

No

Yes

Velocity is a physical quantity which is

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Scalar quantity

Vector quantity

Variable quantity

None of these

If a power 2 kilowatt is maintained for 0.5 minute the work done is

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3.6 × 10⁶ J

6.0 × 10⁵ J

6.0 × 10⁴ J

36.0 × 10⁵ J

Mathematically the first condition for equilibrium can be expressed as

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ΣF_x = 0

ΣF_y = 0

ΣFx = 0 and ΣF_y = 0

ΣFx = 0 or ΣF_y = 0

How would the two vectors of the same magnitude have to be oriented. If they were to be combined to give a result equal to a vector of the same magnitude.

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60^o

120^o

270^o

None of these

The shearing strain is measured by

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Angle of rotation

Shearing stress

Angle of shear

Modulus of rigidity

A pendulum of time period T is kept suspended in a train accelerating uniformly,then its time period

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Remains unchanged

Increases

Decreases

None of these

Newton's laws are suitable, for as compared to velocity of light

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Low speed

Very low speed

Very high speed

None of these

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