what is the principle used in electromagnetic spectrum?and
why there is a necessary of having an electron with unpaired
spins?and how the uncertainity principle is used to determine
the frequency of an spectral lines ?
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What is the principle of superposition?
What is the law of machines?
What is speed of sound at sea level?
Explain what is the ray of light?
Explain the Magnifying power ?
Why ate some clocks slow in summer and fast in winter ?
Why the objects which ate perfect reflectors or transparent, not so easily visible ?
The most abundant metal in the atmosphere?
2 Answers College School Exams Tests,
What is Caustic soda ?
Suppose a car is traveling at 72kmph, and if that car slows down to 60kmph it takes an extra 1 hour to cover that same distance. At 72kmph, how long did it take forthe car to cover that distance?
Why is mercury used in thermometers rather than water?
in one optical instrument, what is the effect of usingtwo converging lenses?