Question # 1

The wavelength of X-rays is of the ofder of.

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10^-14 m

10^-10 m

10^-9 m

10^-6 m

The electrons behave as wave because.

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They can be diffracted by a crystal

They can be defecting by magnetic field

They can be deflecting by electric field

they can produce ions in gases

There are how many types of forces or interactions.

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Two

Three

Four

Five

The nucleus of tritium is called.

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Proton

Triton

Deuleron

Positron

Lissajou's figures are used in a Cathode Ray Oscilloscope while measuring.

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Time period

Frequency

Voltage gain

phase angle

The binary equivalent of 25 is

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111001

11001

1001

10101

LED is a p-n junction that emits

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Visible light

X- rays

Ultraviolet light

electromagnetic waves

A unijunction transistor

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Has only one junction

Is a two terminal device

Is fabricated from germanium

Is fabricated fromuranium

X-rays are good for imagining

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Tendons

Brain

Bones

Heart

In scattering experiment which force scatters alpha particle.

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Nuclear force

Coulomb's force

Gravitational force

Centripetal force

Low frequency response of an amplifier is mainly limited by.

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Biasing configuration

Coupling capacitor

By pass capacitor

Input impedance

The molecular weight of D2O is

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16

18

20

24

In a cloud chamber the Alpha particles leave

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Dense, straight and continuous tracks

Only straight and continuous tracks

Thin and discontinuous tracks

Irregular tracks

The emission of photons by a metal when electrons are incident is called.

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Photo electric effect

Pair production

X-rays production

Gama ray production

Choose the one which acts as single inverter.

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Common emitter

common collector

Common base

Diode

An AND gate is.

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Equivalent to a series switching circuit.

Equivalent to a parallel switching circuit

Equivalent ot universal gate

A reciprocal of NAND gate

The phenomenon is which the wavelength of scattered X-rays is larger than the incident X-rays is known as.

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Zeeman's effect

Photoelectric effect

Compton's effect

Annihilation of matter

Which of the following is not a mode of radioactive decay

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Nuclear fusion

Alpha decay

Electron capture

Positron emission

Besides U ²³⁵ what else is needed for making as atomic bomb.

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Electons

Protons

Neutrons

Photons

Which particles have spin quantum number 1/2

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Mesons

Laptons

Hadrons

Muons

The splitting of atomic energy levels and the associated spectrum lines when the atoms are placed in a magnetic field is called.

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The photoelectric effect

The zeeman effect

The Compton effect

Quantum effect

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