The Laser is a beam of radiations which are –

Related MCQs

• In a Laser (say neon laser) all the atoms emit the light waves of –
• Which, of the following radiations has the least wavelength?
• Ultra violet radiations of the Sun do not reach the earth because, earth's atmosphere is surrounded by –
• A black body can absorb radiations of
• Laser is a device to produce -
• When white light passes through a glass prism we get a spectrum on the other side of the prism. In the emergent beam the ray which is deviated least is -
• Light beam which is highly directional is called:
• Which of the following is an ex-ample for cantilever beam?
• An optically plane surface reflects a beam of light –
• When a strong beam of light is passed through a colloidal solution, the light will –