Question

6) A photo sensitive material would emit electrons if excited by photons beyond a threshold. To
cross the threshold you would increase
(a) the intenuity of light
(c) the frequency of light
(b) the wavelength of light
(d) the voltage applied to light

Answer 1

Answer:

(A)

Explanation:

INTENSITY OF LIGHT. . ....

Answer 2

Answer:

(b) the wavelength of light