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The mobility of mobile holes is less tha...

The mobility of mobile holes is less than that of mobile electrons because

A

holes are heavier than electrons

B

mobile electrons are in the conduction band , hence they are more energetic than holes

C

holes are positively charged

D

electrons experience lesser number of collisions than holes

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • The mobility of free electron is greater than that of free holes because they

    A
    Carry negativ charge
    B
    Are light
    C
    Mutually collide less
    D
    Require low energy to continue their motion

  • The mobility of free electrons is greater then that of free holes because

    A
    they carry negative charge
    B
    they are light
    C
    their matual collisions are less
    D
    they require low energy to continue their motion

  • Assertion . The mobility of sodium ion is lower than that of potassium ion . Reason . The ionic mobilities depend upon the effective radius of the ion .

    A
    If both assertion and reason are true, and reason is the true explanation of the assertion.
    B
    If both assertion and reason are true, but reason is not the true explanation of the assertion.
    C
    If assertion is true, but reason is false
    D
    If both assertion and reason are false.

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    Least mobile ion is :-

    The mobility of electrons when compared tot hat of holes is

    SI unit of mobility of free electrons is

    Assertion (A): The mobility of Na^(o+) is lower than that of K^(o+) ion. Reason (R): The ionic mobility depends upon the effective radius of the ion.

    The mobility of charge carries increases with

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