Normal type of MCQ with one correct option
The maximum energy of the electrons released in photocell is independent of
Frequency of incident light
Intensity of incident light
Nature of cathode surface
None of these
Normal type of MCQ with one correct option
Blue light can cause photoelectric emission from a metal, but yellow light cannot. If red light is incident on the metal, then
Photoelectric current will increase
Rate of emission of photoelectrons will decrease
No photoelectric emission will occur
Energy of the photoelectrons will increase.
Normal type of MCQ with one correct option
A source of light is placed at a distance x forma photocell and the cut off potential is V. If the distance of the same source from the photocell is doubled, then cut off potential will be:
V
2V
Normal type of MCQ with one correct option
The threshold frequency of potassium is
3 (1014Hz. The work function is
1.0 ( 10(19 J
2.0 ( 10(19J
4.0 ( 10(19 J
0.5 ( 10(19 J
A,B
B
D
A,B & D
0
Blue
Green
Orange
Violet
2eV
4eV
8eV
10eV
Both A and R are true and R is correct explanation of A
Both A and R are true and R is not correct explanation of A
A is true, R is false
A is false, R is true