Explanation

. LASER  stands for Light Amplification by Stimulated Emission of Radiations

LASER types

• Gas LASER
• Semiconductor LASER
• Chemical LASER
• Liquid or Dye LASER
• Excimer LASER

Properties of LASER

Explanation

Watts are defined as 1 Watt = 1 Joule per second (1W = 1 J/s)

1 kW = 1000 J/s. 

Additional Information:

The SI Unit of power is Watt.

1 Watt = 1 Joule/second.

1 Joule = 1 Newton-meter

1 Watt = 1 Newton=meter/second

NA21-8-2023

Explanation

CNES is a space agency in France

CNES stands for National Centre for Space Studies.

CNES Formed  in 19 December 1961

Explanation

Thermal power generation consists of using steam power 

Thermal energy sources are fossil fuels like:

natural gas, coal, and oil

as well as solar heat

heat pump electric heat

and geothermal heat.

Explanation

Liquified HCl has been cooled until the gas turns into a liquid.

ND06-08-2023

Explanation

The process by which atoms gain or lose electrons is called Ionization.

Ionization is the process by which an atom acquires a negative or positive charge by gaining or losing electrons, often in conjunction with other chemical changes.

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Explanation

The correct option will be 2 milliamperes ( according to the NTS answer key).

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In reality, 2 mA typically causes a mild tingling sensation or a slight shock, but it is not enough to cause severe injury or put someone into a coma.

For a current to potentially cause a coma, it usually needs to be in the range of 50 to 100 mA.

Explanation

A balloon is filled with a gas called helium.

while

A balloon filled with hydrogen gas moves in the upward direction

Explanation

Very high frequency is the ITU designation for the range of radio frequency electromagnetic waves from 30 to 300 megahertz,

with corresponding wavelengths of ten to one meter.

ND17-7-2023

Explanation

 In a p-n-p transistor, the collector current is slightly less than the emitter current.

This is because a small portion of the current flowing from the emitter to the base recombines with electrons in the base region, reducing the current that reaches the collector.