The maximum kinetic energy of the emitted electrons is found to be 1.255 eV when a metal surface is illuminated by light with a wavelength of 400 nm. When the same metal surface is illuminated by light with a different wavelength, the maximum kinetic energy of the emitted electrons is found to be 0.634 eV. What is the wavelength of this light in nm

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.