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On a particular day, the maximum frequen...

On a particular day, the maximum frequency reflected from the ionosphere is 10 MHz. On another day, it was found to increase to 11 MHz. Calculate the ratio of the maximum electron densities of the ionosphere on the two days. Point out a plausible explanation for this.

A

`1.21 `

B

`0.82 `

C

`0.50`

D

`0.25 `

Text Solution

Verified by Experts

The correct Answer is:
A
As ` , f_(c)=9sqrt(N_("max"))`
` :. N_("max")=(f_(c)^(2))/(81)prop f_(c)^(2`
`implies ((N_(2))_("max"))/(N_(1))_("max")=((11)/(10))^(2) =(121)/(100)=1. 21 `
The variation may be due to atmospheric disturbances .
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