is it possible that the clock works differently in winter and in summer ?
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Explain the difference between photodiode & photocell?
How fast can a shadow move ? If a moth fly's in front of a very bright room temperature light powerful enough to light up Saturn like the sun could it's shadow move faster then light if there was no light diffusion.
What is a crest?
Explain reflection of light?
What is soda water ?
Explain how do fireworks turn into shapes like hearts and stars?
Why a pen used for writing with ink is always split as its pointed end?
In which medium the velocity of sound is large?
whether egg or hen came first
Explain how do you find the refractive index of a liquid by using total internal reflection?
why ac is attractive and dc is repulsive?
What is the proper formula used to calculate acceleration?