Threshold wavelength for photoelectric emission from a metal surface is 5200 mathringA . Photoelectrons will be emitted when this surface is illuminated with monochromatic radiation from ..............

Question

Threshold wavelength for photoelectric emission from a metal surface is 5200 mathringA . Photoelectrons will be emitted when this surface is illuminated with monochromatic radiation from .............. (A) 50 W IR lamp (B) 10 W IR lamp (C) 1 W IR lamp (D) 50 W UV lamp

Tardigrade Admin · Accepted Answer

High frequency, high power is preferable .

Q. Threshold wavelength for photoelectric emission from a metal surface is 5200A˚ . Photoelectrons will be emitted when this surface is illuminated with monochromatic radiation from ..............

50 W IR lamp

10 W IR lamp

1 W IR lamp

50 W UV lamp

High frequency, high power is preferable .

Q. Threshold wavelength for photoelectric emission from a metal surface is $5200 \overset{˚}{A}$ . Photoelectrons will be emitted when this surface is illuminated with monochromatic radiation from ..............