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The threshold frequency for a metallic s...

The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV and the stopping potential for a radiation on this surface is 5 V. The incident radiation lies in

A

1.1 eV

B

9.5 eV

C

5.3 eV

D

4.2 eV

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The correct Answer is:
B
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AAKASH SERIES-DUAL NATURE OF RADIATION AND MATTER-EXERCISE=II
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  2. The maximum wavelength of a beam of light can be used to produce photo...

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  4. The energy flux of sunlight reaching the surface of the earth is 1.388...

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  5. The threshold frequency for a certain metal is v(0). When a certain ra...

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  6. The work function of a certain metal is 3.31xx10^(-19) jthen, the maxi...

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  7. A photon of energy E ejects a photoelectron from a metal surface whose...

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  8. The surface of a metal is illuminated with the light of 400nm. The kin...

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  9. The ratio of velocities of a proton and an alpha particle is 4 : 1. Th...

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  10. Which of the following figure represents the variation of particle mom...

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  11. If vec a and vec b are two unit vectors and theta is the angle between...

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  12. If the kinetic energy of a particle is increased by 16 times, the perc...

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  13. Find the ratio of de Broglie wavelengths of proton and alpha-particle ...

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  14. A positron and a proton are accelerated by the same accelerating poten...

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  16. The wavelength of x-rays is of the order of

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  17. The energy of an x-ray photon is 4 kev. Its frequency is nearly

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  18. The momentum of a photon of energy 1MeV "in" kg m//s, will be

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  19. If lamda(K(alpha)),lamda(K(beta)) and lamda(L(alpha)) are the waveleng...

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  20. Atomic numbers of two element are 31 and 41. Find the ratio of the wav...

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