Assuming human pupil to have a radius of 0.25 cm and a comfortable viewing distance of 25 cm, the minimum separation between two objects that human eye can resolve at 500 nm wavelength is :
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If a piece of metal is heated to temperature θ and then allowed to cool in a room which is at temperature θ0 the graph between the temperature T of the metal and time t will be closest to :
If y=sec(tan−1x), then dxdyat x=1is equal to
Let the population of rabbits surviving at a time t be governed by the differential equation (dpdtt=21p(t)−200.If p(0)=100, then p(t) equals
In the circuit shown, the current in the 1Ω resistor is :
Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy ?
The circle passing through (1, -2) and touching the axis of x at (3, 0) also passes through the point
A particle of mass m moving in the x direction with speed 2v is hit by another particle of mass 2m moving in the y direction with speed v. If the collision is perfectly inelastic, the percentage loss in the energy during the collision is close to
The standard Gibbs energy change at 300 K for the reaction 2A⇔B+C is 2494.2J. At a given time, the composition of the reaction mixture is [A]=21,[B]=2and[C]=21. The reaction proceeds in the : [R=8.314J/K/mol,e=2.718]