Question

Which theory cannot completely explain important observations of photoelectric emission?

पर्याय

• The use of suitable filters to change light frequency

• Classical wave theory of light

• The use of a battery for applying a potential difference

• The use of a microammeter to measure photocurrent

Answer 1

Some observations of photoelectric emission present difficulties for the classical wave theory of light. Threshold frequency and essentially instantaneous emission are among the key observations.