For this lens;

$R_{1}$ is +ve, $R_{2}$ is -ve

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$R_{1}$ is -ve, $R_{2}$ is +ve

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$R_{1}$ & $R_{2}$ are both +ve.

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$R_{1}$ & $R_{2}$ are both -ve.

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Solution

The correct option is A
$R_{1}$ is +ve, $R_{2}$ is -ve

Following the sign convention;
$R_{1}$ is +ve & $R_{2}$ is -ve.

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Similar questions

For this lens;

Q. A boy uses spectacles of focal length 60 cm. Name the defect of vision he is suffering from which lens is used for the correction of this defect? Compute the power of this lens

Q. A parallel beam of light rays travelling parallel to principal axis after passing through the lens actually meet. This phenomena happens for which type of lens?

We can burn a piece of paper by focussing the sunrays by using a particular type of lens. Name the type of lens used for this purpose.

Draw a ray diagram to show how a converging lens can form an image of the sum. Hence give a reason for the term 'burning glass' for a converging lens used in this manner.

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For this lens;

The correct option is A R1 is +ve, R2 is -ve Following the sign convention; R1 is +ve & R2 is -ve.

The correct option is A
$R_{1}$ is +ve, $R_{2}$ is -ve

Following the sign convention;
$R_{1}$ is +ve & $R_{2}$ is -ve.