The number of S =O and S-OH bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are :
Match List-I (Electromagnetic wave type) with List-II (Its association/application) and select the correct option from the choice given below the lists :
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 :
Given : A circle, 2x2+2y2=5and a parabola, y2=45x.Statement - I : An equation of a common tangent to these curves is y=x+5Statement - II : If the line, y=mx+m5(m=0)is their common tangent, then m satisfies m4−3m2+2=0.
A beam of unpolarised light of intensity I0 is passed through a polaroid A and then through another polaroid B which is oriented so that its principal plane makes an angle of 45∘ relative to that of A. The intensity of the emergent light is:
A pendulum made of a uniform wire of cross sectional are A has time period T. When an additional mass M is added to its bob, the time period changes to TM. If the Young's modulus of the material of the wire is Y then Y1 is equal to : (g = gravitational acceleration)
In a hydrogen like atom electron makes transition from an energy level with quantum number n to another with quantum number (n - 1). If n>>1, the frequency of radiation emitted is proportional to
Let A and B be two events such that p(A∪B)=61,p(A∩B)=41 and p(A)=41, where Astands for thecomplement of the event A. Then the events A and B are