.......... can be used as rectifiers.

A triode consists of ......... electrodes.

............ can be used as amplifiers.

Germanium and silicon are commonly used......... .

In p type semiconductor, .......... are majority carriers.

In N type semiconductor, ........... are majority carriers.

The full-wave rectifier uses ........... semiconductor diodes.

In half-wave rectifier uses ............ semiconductor diodes.

Transistors can be used as.......... .

A transistor is made of ........ layers of p and n- semiconductors.

Generally, electronic circuits can be divided into......... groups.

Integrated circuits are so small that about......... electronic components can be fitted one cubic inch or of less space .

There are ......... common logic gates.

......... gate is also called universal gates.

.......... gate is also called inverter gate.

In ......... gate, the output is high when all inputs are high.

The output of........ gate is not high when both inputs are high.

Cathode rays consists of fast moving......... .

Under normal condition, air is a/an ......... .

X-rays are .......... waves like light.

Light, x-rays and gamma rays are ........ radiations.

The ........ X-rays are used to destroy cancer cells.

The wavelength of x-rays are much ....... than those of light.

.......... discovered radioactivity in 1896.

Alpha particles are ......... nuclei.

........ rays can be stopped by a thick sheet of paper.

Beta rays are composed of......... or positrons.

Beta particles are moving electrons and .......... .

....... rays cannot be deflected by both electric and magnetic fields.

Gamma rays are high energy.......... .

.......... is the time for half the atoms in radioactive sample to decay.

The rate of decay of a radioactive sample is called it's ........ .

Quartz are fundamental constitutents of neutron and ......... .

The ......... are not present in the nucleus.

A normal atom is electrically.......... .

In Bohr's atomic model, electrons are moving around the.......... in circular orbits.

The atom which have the same atomic numbers but different mass numbers are called........ .

The nucleus of a ₁²H-atom contains two .......... .

The nucleus of a ³₁H-atom contains one ......... .

The number of neutron in simple hydrogen atom is ........ .

The symbol for the heavy hydrogen tritium is ........ .

The nucleus of a He-atom contains........ protons.

A simple hydrogen atom has no ......... in its nucleus.

In 1895, ........... discovered X-rays.

Fleming invented a ......... using the principle of thermonic emission.

Radioactive atoms of an element change into atom of other elements when ......... particles are emitted.

........ rays consist of electron with varying speeds

The half-life is a time for the atoms in ......... to decay.

A ......... is made of three layers of p-type and n-type semiconductors.

A ......... is made of three layers of p-type and n-type semiconductors.

Whenever a particle penetrates and changes a nucleus, this is called a ....... .

The SI unit for radioactivity is ........ .

Pure semiconductors have equal numbers of electrons and ........ .

......... rays are the most penetrating of the three rays.

The mass of an atom depends on the number of........ in the nucleus.

Radioisotope iodine-123 is ....... emitter.

All natural cobalt is .........., which is stable.

Isotopes of a single element have the same........ properties.

Metals contain a large number of......... .

The resistance of forward - biased emitter junction is ......... .

When electrons strike the screen, fluorescence takes place with a ...... light

Cathode rays have ...... and kinetic energy.

X-rays are emitted when electrons strike the target, which is made of tungsten to withstand ....... temperature.

Alpha rays consist of ....... charged particles.

Matter is composed of........ .

All the mass of an atom is ....... in its nucleus.

Indium atoms have ....... valence electrons.

Two NAND gates can be connected to behave as an/ a ........ gate.

When electrons strike the tungsten .........bare emitted.

The most abundant radioactive isotope is ........ .

Gamma rays are high........ photons.

The half -life of radium is ....... .

In some reactors, ....... is used as a moderator.

A proton is composed of elementary particles called ........ .

The rate of decay is unaffected by ........ .

X-rays photons have higher energies than ....... photons.

There exist ....... isotopes of copper.

There exist......... isotopes of hydrogen.

There exist......... isotopes of uranium.

Tritium is a kind of heavy hydrogen atom with........ extra neutrons.

The nucleus of ²₁H atom contains two ........ .

The filament in vacuum diode is used as a source of ......... .

The positron possesses an identical mass as the ........ .

The number of proton in an atom is called the ....... number.