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Which two of the following five physical...

Which two of the following five physical paremeters have the same dimensions ? 1. energy density 2. refractive index 3. dielectric constant 4. Young's modulus 5. magnetic field.

A

`-5Q`

B

`+3Q`

C

`-4Q`

D

`+4Q`

Text Solution

Verified by Experts

The correct Answer is:
A

Inner charge density `=(-Q)/(4pi a^(2))`
Outer charge density`=((q+Q))/(4pi(2a)^(2))`
`(-Q)/(4pi a^(2))=((q+Q))/(4pi(2a)^(2)) rArr q=-50`
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