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When the frequency fo light incident an ...

When the frequency fo light incident an a metallic plate is doubled , the 1KE` of the emitted photoelectrons will be :

A

Double

B

Halved

C

Increased but more than doubled fo the previous KE

D

Unchanged

Text Solution

Verified by Experts

The correct Answer is:
C
`hv_1` = work funciton ` + KE_1`
` 2 xx hv_1` = work function `+ KE_2`.
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P BAHADUR-ATOMIC STRUCTURE-Exercise 3A
  1. Photoelectric effect shows :

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  2. If E(1),E(2) and E(3) represent respectively , the kinetic energies ...

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  3. When the frequency fo light incident an a metallic plate is doubled , ...

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  4. Braggs equation will have bno solution if :

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  5. The increasing order (lowest first) for the value of e//m ("charge" /...

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  6. How many unpaired electrons are there in Ni^(2+)?

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  7. The orbital diagram in which the Aufbau principle is violated is

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  8. Predict the total spring in Ni^(2+) ion :

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  9. Photoelectric emission is observed from a surface for frequencies v(1)...

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  10. Suppose a completely filled or half fillled set fo ( p) or d-orbitials...

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  11. The ratio of the differrence between the first and second Bohr orbit e...

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  12. The number of vacant d-orbitals in completely excited Cl atom is :

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  13. Isoelectronic structures among the following structures are : (I) CH...

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  14. Possible muber of orientations fo a subshell is :

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  15. If each hydrogen atom is excited by giveng 8. 4 eV of energy , then t...

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  16. The magneit moment fo electron in an atom ( excluding orbitial magnetc...

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  17. Atom conssit of electrons , protons and neutrons . If the mass attribu...

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  18. As an electron is brought form an infinite distance close to the nucle...

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  19. Which orbital is nearest to the nucleus ?

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  20. Which ion has the maximum magnetic moment ?

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