Why is the cathode ray oscilloscope evacuated?

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Which property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency

The two way interaction between aspects of the environment and aspects of the individual in the shaping of personality traits is called?