When a metal surface is illuminated by light of wavelengths 400 nm and 250 nm, the maximum velocities of the photoelectrons ejected are $$v$$ and $$2v$$ respectively. The work function of the metal is (h = Planck?s constant, c = velocity of light in air) [EAMCET (Engg.) 2000]

Question

When a metal surface is illuminated by light of wavelengths 400 nm and 250 nm, the maximum velocities of the photoelectrons ejected are $$v$$ and $$2v$$ respectively. The work function of the metal is (h = Planck?s constant, c = velocity of light in air)                                    [EAMCET (Engg.) 2000]

TuteeHUB · Accepted Answer

$$1.5\,hc\,\times {{10}^{6}}\,J$$

TuteeHUB · Answer

$$2\,hc\,\times {{10}^{6}}\,J$$

TuteeHUB · Answer

$$hc\,\times {{10}^{6}}\,J$$

TuteeHUB · Answer

$$0.5\,\,hc\,\times {{10}^{6}}\,J$$

1.	When a metal surface is illuminated by light of wavelengths 400 nm and 250 nm, the maximum velocities of the photoelectrons ejected are \[v\] and \[2v\] respectively. The work function of the metal is (h = Planck?s constant, c = velocity of light in air) [EAMCET (Engg.) 2000]
A.	\[2\,hc\,\times {{10}^{6}}\,J\]
B.	\[1.5\,hc\,\times {{10}^{6}}\,J\]
C.	\[hc\,\times {{10}^{6}}\,J\]
D.	\[0.5\,\,hc\,\times {{10}^{6}}\,J\]
Answer» B. \[1.5\,hc\,\times {{10}^{6}}\,J\]

When a metal surface is illuminated by light of wavelengths 400 nm and 250 nm, the maximum velocities of the photoelectrons ejected are \[v\] and \[2v\] respectively. The work function of the metal is (h = Planck?s constant, c = velocity of light in air) [EAMCET (Engg.) 2000]

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