A spherical raindrop falling under constant gravity, grows by absorption of moisture from it's surroundings. The rate of increase of it's mass is proportional to the instantaneous surface area. Assuming that the raindrop starts with an infinitely small radius, determine its acceleration at time t.
let us consider the ansatz,
A diffraction grating used at normal incidence gives a line
in certain order superposed on another line of the next higher order. If the angle of diffraction be , how many lines/cm, are there on the grating?
Also, by the problem, the two lines get superposed in
Many chemical reactions have an activation energy which is about eV . Hence Show that rate of chemical reactions doubles when temperature is increased by from the room temperature.
At T=300K, which is about room temperature, the probalility that a particular reaction occurs is proportional to .
If the temperature is increased to ,
The probability increases to
Show that the error in truncating a convergent alternating infinite series after n terms is less than the ( n+1 ) th terms.
[Calcutta University Physics Model Solution]
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