Linked Multiple Choice Questions – Photoelectric Effect

The choices for each of the following question are given below The choices for each of the following question are given below. The questions are independent and choices may be reused photocurrent increases immediately photocurrent increases gradually photocurrent decreases immediately photocurrent decreases gradually No change in the photo current

Infrared light shined on the photocathode initially emits no electrons Infrared light shined on the photocathode initially emits no electrons. The intensity of the light is increased. The classical prediction is A B C D E

Infrared light shined on the photocathode initially emits no electrons Infrared light shined on the photocathode initially emits no electrons. The intensity of the light is increased. The quantum prediction is A B C D E

Ultraviolet light shined on the photocathode initially emits electrons Ultraviolet light shined on the photocathode initially emits electrons. The intensity of the light is increased. The classical prediction is A B C D E

Ultraviolet light shined on the photocathode initially emits electrons Ultraviolet light shined on the photocathode initially emits electrons. The intensity of the light is increased. The quantum prediction is A B C D E

It is observed that light of 540 nm just begins to emit photoelectrons It is observed that light of 540 nm just begins to emit photoelectrons. The wavelength of the incident light is changed to 550 nm. The classical prediction is A B C D E

It is observed that light of 540 nm just begins to emit photoelectrons It is observed that light of 540 nm just begins to emit photoelectrons. The wavelength of the incident light is changed to 550 nm. The quantum prediction is A B C D E