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An electromagnetic wave of intensity 50 Wn^-(2) enters in a medium of refractive index 'n' without any loss .The retio of the magnitudes of magnitudes of magnetic fields of the wave before and after entering into the medium are respectively ,given by:

Statement I : Adjourment is a short recess within the session of the parliament ordered by the presiding officer of the house. Statement II When the presiding officer adjourns the House without fixing any date or time of the next meeting of the house it is known as adjourment sine die .

If the earth were to suddenly contract to half of its present radius (without any external torque on it), by what duration would the day be decreased ? Assume earth to be perfect solid sphere of radius (2)/(5)MR^(2) .

A mass m of radius r is rolling horizontally without any slip with a linear speed v . It then rolls up to a height given by (3)/(4)(v^(2))/(g)

Three 10 Omega , 2 W resistors are connected as in Fig. 7.34 . The maximum possible voltage between points A and B without exceeding the power dissipation limits of any of the resistors is

For the circuit would the balancing length increase, decrease or remain the same if (i) R_(1) is decreased (ii) R_(2) is increased, without any change (in each case) in the rest of the circuit ? Justify your answer in each case.

Aakruthi and Prakruthi are playing skipping-rope. Aakruthi skips 30 times in a minute and Prakruthi skips 20 times in a minute. Both of them start skiping at 4.50 p.m. and continue till 5 p.m. without any interruption. How many times do they skip the rope simultaneously after 4.50 p.m. ?