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Dejd The threshold wavelength for the photoelectric effect for aluminum is 288 nm: The work function for aluminum is...

Question

Dejd The threshold wavelength for the photoelectric effect for aluminum is 288 nm: The work function for aluminum is

dejd The threshold wavelength for the photoelectric effect for aluminum is 288 nm: The work function for aluminum is



Answers

The threshold wavelength for the photoelectric effect for a specific alloy is $400 . \mathrm{nm}$. What is the work function in electron-volts?

In the execution we have given a threshold. We have land for photoelectric effect in a specific a lawyer and we have to calculate the water function. So work function can be given this. Why is equals to exceed the weight lambda here, which is the planks constant. She is the spirit of light and lambda is the result of evidence. To put all the values in this. So 4.1, 4, 1, 3 and 210 to depart -15. This is 3- 10 to the power eight device. This is 400 Into 10 to the Power -9. After solving this, we get the value of work function fight, which is 3.150 nine Electron World. So this is the required. What function of these materials? Thank you.

Here in discussion from find strains of both the energy balance on an electron on the surface, that crazy energy, You know that a maximum is equals Two years minus right? No, they came maximum maximum kinetic energy. I'm in the mosque, Be below 23 axes after back, atop frequented and I just blank walls, gender and fire the work function. Now we know the value of a tragic one. Perfect in tow. Tenders to follow minus 34 door seeking. And we know the value which have given Lambda just 30490 meter and the longest Revlon's means the smallest frequently can ejected a front on the matter surface The little kinetic energy Your maximum is equal to zero. No, You know that Fry is the list. Why is the blissful at everything? Lugging the non information at Jefty is go through friends. From here we can find the value of five which is at sea upon Linda. After putting the values 6.626 into journalist a probable minus 34 murder plan with three in pretenders to cover eight, which is feed off light divided by Lambda Lambda here 304 Indo tenders to cover minus nine multiplied of it minus nine multiplies with 1.6 in two tenders to cover minus 19. We get the value minus. We get the religion off Lambda, which is 410 It hence the value of fire is 4.86 electron words.

The cut off we planned for Puerto electric effect is given by lambda. See it equal to at sea by by on further simplification, I can write the value of lambda. See is equal to 4.1 36 multiplication 10 to the power minus scripting E B second multiplication, three multiplication, 10 to the party meter per second by 4.8 E B. On simplification, I get the value of lambda. Z is equal to 3.41 multiplication 10 to depart 97 metres, which is equal to 304.1 nm. As development. This is the required cut off way blend. I'm distracting it here, Therefore required cut off. Therefore required cut off. Waveland is equal to three d to 4.1 NM.

Solving party of this problem. So here I can write welcomes and of mental five is equal to s. c. by claim that the Which can be further written as 6.626. Multiplication 10 to the ball -24. You'll second multiplication. Two points 998 multiplication tend to the party meter per second. Bye. 254 multiplication 10 to the power minus nine m which is equal to 7.8205. Multiplication 10 to the power -19 years old. Multiplying it by this value so that I can change the ex prison Which is equal to 4.88 78 E. P. Now I'm going to simplify part B. So here I can write the value of is greater than by according to the given data. Two at sea by Lambda is greater than five. So the value of lambda. It should be smaller than sc by by our weekend. Right blamed us would be smaller than at sea by at sea by lambda. T so on. Further simplification. I can die die value of lambda. The smaller than claim dirty Or Linda should be smaller than 25, 4 and M. To observe the photoelectric effect. The wavelength of incident photons should be less than 25 food enemy.


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