As an electron makes a transition from an excited state to the ground state of a hydrogen - like atom/ion :
The number of points, having both co-ordinates as integers, that lie in the interior of the triangle with vertices (0, 0), (0, 41) and (41, 0), is :
For a simle pendulum, a graph is plotted between its kinetic energy (KE) and potential energy (PE) against its displacement d. Which one of the following represents these correctly ?
(Graphs are schematic and not drawn to scale)
Let αand βbe the roots of equation x2−6x−2=0. If an=αn−βn,forn≥1, then the value of 2a9a10−2a8is equal to:
The magnetic field in a travelling electromagnetic wave has a peak value of 20 nT. The peak value of electric field strength is :
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.