Let a, b, c and d be non-zero numbers. If the point of intersection of the lines 4ax+2ay+c=0and 5bx+2by+d=0 lies in the fourth quadrant and is equidistant from the two axes then
What is the minimum energy required to launch a satellite of mass m from the surface of a planet of mass M and radius R in a circular orbit at an altitude of 2R?
Four successive members of the first row transition elements are listed below with atomic numbers. Which one of them is expected to have the highest EM3+/M2+0 value ?
The anode voltage of a photocell is kept fixed. The wavelength λ of the light falling on the cathode is gradually changed. The plate current I of the photocell varies as follows: