Who is telling lies?a. Light year is used to measures time.b. End stage of a star depends on its initial mass.c. A star ends its life as a neutron star when the pressure of its electrons balances its gravity.d. Only light can emit from the blank hole.e. The sun will pass through the supergiant stage during its evolution.f. The Sun will end its life as a white dwarf.
The light emitted in the transition n = 3 to n = 2 in hydrogen is called Ha light. Find the maximum work function a metaln can have so that Halight can emit photoelectrons from it.
can spectrometer tell wavelength of band of monochromatic lights or can only tell wavelength of monochromatic light?