Laser is a device to produce -

Related MCQs

• In a Laser (say neon laser) all the atoms emit the light waves of –
• The Laser is a beam of radiations which are –
• Coolis tube is used to produce –
• Nuclear reactors used to produce electricity are based on –
• Which of the following principle is used to produce low-temperatures'?
• Bats can sense obstacles because they produce –
• A device which is used to limit the current in an electrical circuit is called a -
• The device used to change the speed of an electric fan is –
• Remote-sensing device has an inbuilt source of –
• A device used for converting A.C. into D.C. is called –