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Q. The half life of radon is 3.8 days. Calculate mean life. Half Life Period HLP T ½ = 0.6931 / λ = 0.6931 τ therefore Mean life τ = T ½ / 0.
Q. Why X-rays are not used in microscopes? 1) The wavelength of X-rays is slighter than that of the visible light. 2) X-rays can't be focussed as visible radiations are foc
The cross-sectional areas of the pistons in the system shown below have a ratio of 25 to 1. If the maximum force that can be applied to the small piston is 12 N. What is the
how do you produce a pure spectrum
An organ pipe which is open at both ends resonates at its fundamental frequency. Neglecting any end effects, what wavelength is formed by this pipe in this mode of vibration if the
a) Explain the magnetic effects of current? b) Do the diagram to show the direction of motion of the conductor:
Illustrates the quantum theory of black body radiation by Planck? Planck’s quantum theory of black body radiation Planck was investigating the properties of light-emitting a
(i)Most of the alpha-particles pass by the foil straight away undeflected. (ii)Some of them are deflected by small angles. (iii)A few alpha-particles (1 in 1000) are deflecte
Explain the terms 'Magnetic Dip' and 'Magnetic Declination' with the help of relevant diagrams.
Schwarzschild radius The radius r of the event horizon for Schwarzschild black hole of mass m is provided through (in geometrized units) r = 2 m. In conventional units, r =
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