Physics-
General
Easy
Question
A mass 
is suspended by means of two coiled spring which have the same length in unstretched condition as in figure. Their force constant are 
and 
respectively. When set into vertical vibrations, the period will be
The correct answer is:
Given spring system has parallel combination, so
and time period 
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The standard emf of a galvanic cell involving cell reaction with n=2 is found to be 0.295 V at 25°C. The equilibrium constant of the reaction would be - given F=96500e 
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Which of the following reaction occurs in a Daniel cell
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A rocket is fired and ascends with constant vertical acceleration of 10m/s2 for 1 minute Its fuel is exhausted and it continues as a free particle The maximum altitude reached is (
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If 
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physics-General
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At time t = 0, terminal A in the circuit shown in the figure is connected to B by a key and an alternating current I(t) = I0 cos(
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In the given circuit, the AC source has = 100 rad/s. considering the inductor and capacitor to be ideal, the correct choice(S) is(are)
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In an L–R series circuit, a sinusoidal voltage 
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An AC voltage source of variable angular frequency and fixed amplitude V connected in series with a capacitance C and an electric bulb of resistance R (inductance zero). When is increased :
In an L–R series circuit, a sinusoidal voltage is applied. It is given that L = 35 mH, R = 11, Vrms = 220 V, and = 22/7. Find the amplitude of current in the steady state and obtain the phase difference between the current and the voltage. Also plot the variation of current for one cycle on the given graph.
An AC voltage source of variable angular frequency and fixed amplitude V connected in series with a capacitance C and an electric bulb of resistance R (inductance zero). When is increased :
physics-General
