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C1 and C2, are the two concentric circle...

`C_1 and C_2`, are the two concentric circles withradii `r_1 and r_2, (r_1 lt r_2)`. If the tangents drawnfrom any point of `C_2`, to `C_1`, meet again `C_2`, at theends of its diameter, then

A

`r_(2)=2r_(1)`

B

`r_(2)=sqrt(2)r_(1)`

C

`r_(2)^(2)lt 2r_(1)^(2)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
In `Delta OPM`, we obtain
`sin 45^(@)=(OM)/(OP)rArr (1)/(sqrt(2))=(r_(1))/(r_(2))rArr r_(2)=sqrt(2)r_(1)`
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OBJECTIVE RD SHARMA-CIRCLES-Section I - Solved Mcqs
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  9. In example 70, equations of the sides QR and RP are respectively

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