Last Updated On 01-06-2023 - By Jeesha Sara
Surface of certain metal is first illuminated with light of wavelength 
1=350mm and then, by light of wavelength 
2=54Dmm, it is found that the maximum speed of the photon electrons in the two cases differ by a factor of 2. The work function of the metal (in eV) is close to:
(Energy of photon=
eV)
|
a. |
1.8 |
b. |
1.4 |
|
c. |
2.5 |
d. |
5.6 |
Question ID - 50062 :- Surface of certain metal is first illuminated with light of wavelength 1=350mm and then, by light of wavelength 2=54Dmm, it is found that the maximum speed of the photon electrons in the two cases differ by a factor of 2. The work function of the metal (in eV) is close to:
(Energy of photon= eV)
a.
1.8
b.
1.4
c.
2.5
d.
5.6
Surface of certain metal is first illuminated with light of wavelength 1=350mm and then, by light of wavelength 2=54Dmm, it is found that the maximum speed of the photon electrons in the two cases differ by a factor of 2. The work function of the metal (in eV) is close to:
(Energy of photon= eV)
|
a. |
1.8 |
b. |
1.4 |
|
c. |
2.5 |
d. |
5.6 |
= 
+
(2v)2
=
+
mv2
=
4
=3
=
1240
Next Question :
|
The area of a right-angled triangle is 40 times its base. What is its height? |
|||||||
|
(a) |
45 cm |
(b) |
60 cm |
(c) |
80 cm |
(d) |
Data inadequate |
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