Question 22
Calcium has a work function of 19eV with wavelength of 150nm. Calculate the maximum energy a a photo electron emitted. (1 eV = 1.6 x 10-19J, h = 6.6 x 10-34Js)
Objective
Question details
- Exam body
- OAU
- Subject
- Physics
- Year
- 2012/2013
- Question no.
- #22
- Type
- Objective
More from this paper
- Q15A hydraulic press works on the principle of transmission of
- Q16A cigarette lighter in a car is a resistor that, when activated, is connected…
- Q17A p - n junction can act as
- Q18Which of the following is not a thermometer?
- Q19Dry air of column length 10cm is trapped by a pellet mercury of length 15cm…
- Q20Sound waves were sent out from a source and after being reflected from an…