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The best suitable metal for photo electr...

The best suitable metal for photo electric effect is

A

Iron

B

Steel

C

Aluminium

D

Cesium

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • Photo electric effect shows

    A
    wave like behaviour of light
    B
    particle like behaviour of light
    C
    both wave like and particle like behaviour of light
    D
    neither wavelike nor particle like behaviour of light.

  • Assertion : Alkali metals are most suitable for photoelectric effect. Reason : The work function of alkali metals is small, so even the radiations of small energy are able to cause the photoelectric effect.

    A
    Assertion is True, Reason is True,
    Reason is a correct explanation for Assertion.
    B
    Assertion is True, Reason is True,
    Reason is not a correct explanation for Assertion.
    C
    Assertion is True, Reason is False.
    D
    Assertion is False but, Reason is True.

  • Which metal will be suitable for a photo electric cell using light of wavelength 4000 Å. The work functions of sodium and copper are respectively 2.0 eV and 4.0 eV.

    A
    sodium
    B
    copper
    C
    Both
    D
    None of both

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