O Work function of the Aluminum is 4.08 eV. What is the threshold frequency required to produce photoelectrons from aluminum? Classify electromagnetic radiations that can produce photoelectrons. If light of frequency 4 x 1015 Hz is used to illuminate a piece of aluminum, then what is the maximum energy and speed of emitted photoelectrons? If the light described in part (ii) is increased by a factor of 2 in intensity, what would happen to the maximum kinetic energy of photoelectrons?

Q: Christmas tree ball. If your face is 23.0 cm away from the ball's front surface, where is your…

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Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.