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Statement-1 : The direction of diffusion...

Statement-1 : The direction of diffusion current in a junction diode is from n-region to p-region.
Statement-2 : The majority current carrier diffuse from a region of higher concentration to a region of lower concentration.

A

Statement-1 is true, Statement-2 is true, Statement-2 is a correct explanation of Statement-1.

B

Statement-1 is true, Statement-2 is true, Statement-2 is not a correct explanation of Statement-1.

C

Statement-1 is true, Statement-2 is false.

D

Statement-1 is false, Statement-2 is true.

Text Solution

Verified by Experts

The correct Answer is:
D
The direction of diffusion current is that where positively charged particles move. Hence statement-1 is wrong. Statement-2 is true.
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Knowledge Check

  • In p-n junction diode, holes diffuse from p-region to n-region because

    A
    the free electrons in the n-region attract them.
    B
    they are swept across the junction by potential difference.
    C
    there is a greater concentration of holes in p-region as compared to n-region.
    D
    there is great concentration of electrons in p-region as compared to n-region.

  • Statement 1: the process of diffusion does not require any input of energy. Statement 2: Diffusion involves movement of particles from a region of higher concentration to a region of lower concentation.

    A
    Both statements `1`and `2` are correct.
    B
    Statement `1` is correct but statement `2` is incorrect.
    C
    Statement `1` is incorrect but statement `2` is correct.
    D
    Both statements `1` and `2` are incorrect.

  • In a p-n junction diode, holes diffuse from p-region to n- region because

    A
    there is a large concentration of holes in p region as compared to n regions
    B
    there is large concentration of electrons in p region as compared to the n region
    C
    the concentration of holes and electrons in both (p region & n region) is same
    D
    the mobility of holes is more than the mobility of electrons

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    Imbibition/diffusion is the movement of substances from the region of their higher concentration to the region of lower concentration.

    In an unbiased pn junction holes diffuse from the p-region to n-region because

    In an unbiased p-n junction electrons diffuse from n-region to p-region because :-

    Movement of the molecules of solids, gases or liquids from the region of their higher concentration to the region of their lower concentration is known as

    With in depletion region of p-n junction diode :

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