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Question 2.9: A photon of wavelength 4 × 10–7 m strikes on the metal surface, the work function of the metal is 2.13 eV. Calculate (i) the energy of the photon (eV), (ii) the kinetic energy of the…
Question 2.8: What is the number of photons of light with a wavelength of 4000 pm that provide 1 J of energy? https://www.youtube.com/watch?v=lCdbg6Dtw3I Question 2.8: What is the number of photons of light with a wavelength of 4000…
Question 2.7: Calculate the wavelength frequency and wave number of a light wave whose period is 2.0 × 10–10 s. https://www.youtube.com/watch?v=G4rzkF41-58 Answer 2.7: Frequency (ν) of light = 1/Period Frequency (ν) = 1/2.0 × 10–10 s = 5…
Class 11 Chemistry Chapter 2 Question 2.1 https://www.youtube.com/watch?v=_lNTTItFsbg&t=32s Question 2.1: (i) Calculate the number of electrons which will together weigh one gram. (ii) Calculate the mass and charge of one mole of electrons. Ans 2.1: (i) Mass of…