the photoelectric effect for magnesium metal has a threshold frequency of 8.95×10^14 s^(-1). can mg be used…

the photoelectric effect for magnesium metal has a threshold frequency of 8.95×10^14 s^(-1). can mg be used in photoelectric devices that sense visible light? do a calculation in support of your answer. the highest frequency of visible light is v = i×10^i s^(-1). this is than the threshold frequency, so mg be used in photoelectric devices.

the photoelectric effect for magnesium metal has a threshold frequency of 8.95×10^14 s^(-1). can mg be used in photoelectric devices that sense visible light? do a calculation in support of your answer. the highest frequency of visible light is v = i×10^i s^(-1). this is than the threshold frequency, so mg be used in photoelectric devices.

Answer

Explanation:

Step1: Recall visible - light frequency range

The frequency range of visible light is approximately $4.0\times 10^{14}\ s^{-1}$ to $7.9\times 10^{14}\ s^{-1}$. The highest frequency of visible light is $v = 7.9\times 10^{14}\ s^{-1}$.

Step2: Compare with threshold frequency

The threshold frequency of magnesium is $8.95\times 10^{14}\ s^{-1}$. Since $7.9\times 10^{14}\ s^{-1}<8.95\times 10^{14}\ s^{-1}$, the highest frequency of visible light is less than the threshold frequency of magnesium.

Answer:

The highest frequency of visible light is $v = 7.9\times 10^{14}\ s^{-1}$. This is less than the threshold frequency, so Mg cannot be used in photoelectric devices.