explian construction and working of various dye lasers

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Draw a graph between frequency of photon and velocity of photo electron?

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explain principle of potentiometer

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Distinguish between emission and absorption line spectra. : quantum physics

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How we are getting light from electrical bulb?

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Explain the Wet and Dry Hygrometer ?

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The system shown in the figure is in equilibrium. The metal spheres are identical and each has a mass of 2 kg. The surface areas of the pistons are equal and 100 square centimeters each. The density of water is 1 g per cubic centimeter. Assuming that the frictions and masses of the pistons are negligible, what is the mass of G? ( g = 10N/kg )

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Why is mercury used in thermometers rather than water?

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What is the avarege speed of people fencing like at the olympic games. (sorry for the misspelled words)

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What is the homogenous?

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Define weight?

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Explain what affect does electricity have on soil?

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