The plastics industry realized more than 20 years ago that recycling plastics was a necessity for our planet. Can you recognize
1 answer:
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Answer:
v = 301.62 km/s
Explanation:
Given that:
The work function of the magnesium = 3.68 eV
Energy in eV can be converted to energy in J as:
1 eV = 1.6022 × 10⁻¹⁹ J
So, work function =
Using the equation for photoelectric effect as:
Also,
Applying the equation as:
Where,
h is Plank's constant having value
c is the speed of light having value
m is the mass of electron having value
is the wavelength of the light being bombarded
v is the velocity of electron
Given,
Thus, applying values as:
v = 3.0162 × 10⁵ m/s
Also, 1 m = 0.001 km
So, v = 301.62 km/s
The answer to this question is approximately equal to 57.8
