Is the formula you employ in (a) valid for calculating radius of the path of a 20 MeV electron beam? If not, in what way is it modified?

Use the same formula you employ in to obtain electron speed for a collector potential of 10 MV. Do you see what is wrong? In what way is the formula to be modified?

Radiation of wavelength 180 nm ejects photoelectrons from a plate whose work funcion is 2.0 eV. If uniform magnetic field of flux density 5.0 xx 10^-5 T is applied parallel to the plate, what should be the radius of the path followed by electrons ejected normally from the plate with maximum energy.

The terminology of different parts of the electromagnetic spectrum is given in the text. Use the formula E = hv (for energy of a quantum of radiation: photon) and obtain the photon energy in units of eV for different parts of the electromagnetic spectrum. In what way are the different scales of photon energies that you obtain related to the sources of electromagnetic radiation?

An electron after bein accelerated through a potential difference of 1 00 V enters a uniform magnetic field of 0.004 T perpendiular to its direction of motion. Calculate the radius of the path describe by the electron. Given m = 9.1 xx 10^-31 kg and e = 1.6 xx 10^-19 C

A cyclotron's oscillator frequency is 10MHz. What should be the operating magnetic field fro accelerating protons? If the radius of its dees is 60cm, what is the kinetic energy (in MeV) of the proton beam produced by the acceleration? (e- 1.60xx10^-19C,m_p=1.67xx10^-27kg, 1MeV=1.6xx10^-13J)

A beam of light converges at a point P. Now a lens is placed in the path of the convergent beam 12cm from P. At what point does the beam converge if the lens is: a convex lens of focal length 20cm?

Imagine that you are sitting in a chamber with your back to one wall an electron beam moving horizontally with back towards the front wall ,is defected by a strong magnetic field to your right side. What is the direction of the magnetic field?

The gravitational attraction between electron and proton in a hydrogen atom is weaker than the coulomb attraction by a factor of about 10^ -40 . An alternative way of looking at this fact is to estimate the radius of the first Bohr orbit of a hydrogen atom if the electron and proton were bound by gravitational attraction. You will find the answer interesting.

What do you understand by weak field and strong field ligands? With the help of crystal field theory calculate the number of unpaired electrons in octahedral complexes of Fe^(3+) in the presence of weak field ligand.