Question

Explain Please

How is 3rd option correct ?

■BEST ANSWER WILL BE MARKED BRAINLIEST■

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Answer 1

The image produced by concave mirror is erect hence,

the image is placed between pole and focus

so,distance between object and pole is 50mm

so radius is from centre of curvature to pole so add the distance from centre of curvature to pole

Distance between focus and pole and centre of curvature and focus is equal

That means half of radius is the distance between focus and pole

If the object was placed at focus then radius would be exactly 50mm

But it's between focus and pole hence radius becomes greater than 100mm

SO 3rd OPTION BECOMES RIGHT

SO THE RADIUS IS MORE THAN 100MM

HOPE IT HELPS

MARK ME AS BRAINLIEST

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