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The magnitude of any physical quantity c...

The magnitude of any physical quantity can be expressed as `A xx 10^(n)` where n is a number called order of magnitude and A is

A

`0.1 le A le 1`

B

` 0.5 le A lt 5`

C

`5 le A lt 9`

D

`1 le A gt 9`

Text Solution

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The correct Answer is:
b
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Knowledge Check

  • Assertion: The units of some physical quantities can be expressed as combination of the base units. ltbr. Reason: We need only a limited number of units for expressing the derived physical quantities.

    A
    if both assertion and reason are true reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation fo assertion.
    C
    If assertion is true but reaso is false.
    D
    IF both assertion and reason are false.

  • Assertion: A physical quantity cannot be called as a vector if its magnitude is zero. Reason: A vector has both, magnitude and direction.

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

  • What is the order of magnitude of the number 8245 ?

    A
    3
    B
    4
    C
    2
    D
    5

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