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A metallic surface ejects electrons when...

A metallic surface ejects electrons when exposed to green light of intensity I but not when exposed to yellow light of intensity I. It is possible to eject electrons from the same surface by
(i) yellow light of some intensity which is more than I
(ii) green light of any intensity
(iii) red light of any intensity
(iv) violet light of any intensity

A

(i),(ii)

B

(ii),(iii)

C

(i),(iv)

D

(ii),(iv)

Text Solution

Verified by Experts

The correct Answer is:
D
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CP SINGH-PHOTOELECTRIC EFFECT-EXERCISES
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  2. In photoelectric effect

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  3. A metallic surface ejects electrons when exposed to green light of int...

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  4. Lights of two different frequencies whose photons have energies 1 and ...

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  5. Two identical photocathodes receive light of frequency f(1) andf(2) if...

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  6. Radiation of wavelength lambda in indent on a photocell . The fastest ...

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  7. When a certain metallic surface is illuminated with monochromatic ligh...

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  8. Photoelectric emission is observed from a metallic surface for frequen...

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  9. A photon of wavelength 1000 Å has energy 12.3 eV. If light of waveleng...

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  10. In the previous, if the intensity of light is made 4 I, the stopping p...

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  11. In question 23, if the intensity of light is made 4 I, the saturation ...

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  12. The threshold frequency for certain metal is v0. When light of frequen...

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  13. In an experiment on photoelectric effect light of wavelength 400 nm is...

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  14. If Planck's constant is denoted by h and the charge by e, experiments ...

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  15. In order to increase the kinetic energy of ejected photoelectrons, the...

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  16. In photoelectric emission the number of electrons ejected per second i...

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  17. When monochromatic radiation of intensity I falls on a metal surface, ...

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  18. Light of frequeny 1.5 times the threshold frequency , imcident on a ph...

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  19. If the wavelength of light in an experiment on photoelectric effect is...

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  20. When ultraviolet radiation is incident on a surface, no photoelectrons...

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