The fraction of volume occupied by the nucleus with respect to the total volume of an atom(A) 10-15(D) 109IB) 10(C) 10The MRI (magentic resonance imaging) body scanners used in hospitals operate with 400The wavelength corresponding to this radio frequency is :(A) 0.75 m(D) 2 cm(B) 0.75 cm(C) 1.5 mElectromagnetic radiations of wavelength 242 nm is just sufficient to ionise Sodium atoenergy of Sodium in kJ mole'is.(A) 494.65(D) 600(C) 247(B) 400Light of wavelength I falls on metal having work function hc/1, Photoelectric effect will(A2121(B)1 221CHISI(D) 18.A photon of energy hn is absorbed by a free electron of a metal having work function w(A) The electron is sure to come out(B) The electron is sure to come out with a kinetic energy (hn - w)(C) Either the electron does not come out or it comes with a kinetic energy (hn-w)(D) It may come out with a kinetic energy less than (hn - w)() 26 Fe34 26F256, 26F257 26F238 (a) Isotopes, (ii),Hº, He3(b) Isotone 1für 3, Ge? 3345(c) Isodiaphers v​