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The first laser, which stands for "light amplification by stimulated emission of radiation," was developed in 1960 by Theodore H. It works on the principle of optical amplification using stimulated emission of electromagnetic radiation.
Which of the following is a conductor of electricity?
A black body at temperature 500 K emits radiation. If its temperature is doubled, by what factor does its emitted power increase?
The dimensional formula of angular momentum is:
If cream is removed from milk, its density –
What are the elements which are liquids at room temperature and standard pressure?
1. Helium
2. Mercury
3. Chlorine
4. Bro...
On the basis of which phenomenon does a Jet Engine work?
Which food group is rich in dietary fiber?
Ammonium hydroxide is found in -
Eclipses occur due to which optical phenomena?
A thin converging lens of focal length 20 cm is placed at the origin. An object is placed at x = –30 cm. A plane mirror is placed at x = +40 cm. The ...
