Question # 1

The unit Planck's constant is equivalent to that of.

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Energy

Force

Velocity

Angular momentum

Which animal did Erwin Schrodinger contemplate using in his famous thought experiment.

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mouse

Cat

Dog

Rabbit

A slow neutron can cause fission in

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Uranium -238

Uranium-235

Hydrogen-1

Thorium -232

If the base emitter junction is forward biased and base collector junction is reverse biased the BJT is in.

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cut of mode

Amplification mode

Saturation mode

Inversion mode

Which experiment confirmed the de Broglie hypothesis.

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Double slit experiment

Division germier experiment

Schrodinger's Cat experment

Bohr's experiment

Which of the following properties is not exhibited by X-rays.

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Interference

Diffraction

Polarization

Deflection of electric field

The SI unit of radioactivity is.

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Becquerl

Curie

Joule

rutherford

When Photon incident on a metal produce the emission of electrons the process is called.

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Photo electric effect

Pair production

x-rays production

Gama ray production

Which of the following radiations can penetrate 20 cm thick steel.

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Alpha particles

Beta particles

Gama particles

Neutrons

The half life of a radioactive element depends upon.

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Temperature

pressure

nature of element

quantity of the element

The advantage of electron tube over a transistor is.

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Its high efficiency

Its high gain

Low consumption of power

Low input impedance

One rem is equal to.

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0.1 Sv

0.01 Sv

0.001 Sv

0.0001 SV

Mosley's law establishes the x rays fluorescence's of target element with its.

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Atomic weight

Atomic number

Density

Lattice constant

The process of energy generation in sun and stars is.

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Fusion of heavy nuclei

fusion of light nuclei

Fission of light nuclei

Solar panels

Which given quantity remains the same in isotones.

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Mass number

Atomic number

Number of neutrons

Number of protons

The Rutherford atom according to classical theory is

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Stable

Unstable

Partially stable

Quantized

The half life of a radioactive substance depend on.

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Pressure

Temperature

Amount of substance

No external influences

An emitter follower has

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High input impedance and high output impedance

High input impedance and low output impedance

Low input impedance and low output impedance

Low input impedance and high output impedance

Which circuit elements has two stable states and can be used to store information.

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Flip flop or latch

Logic gate

Oscillator

Amplifier

The half life of isotopes X is four days and its initial mass is 32 mg What mass of the isotope X will remain after twelve days.

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2 mg

4 mg

8 mg

18 mg

The division and germier experiment relates to

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Diffusion

interference

Polarization

Electron diffraction

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