A thick plane convex lens made of crown glass (Refractive index $1.5$ ) has thickness of $3 c m$ at its centre.
An ink mark made at the centre of its plane face, when viewed normal through the curved face, appears to be at a distance $x$ from the curved face. Then, $x$ is equal to

2 c m

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2.1 c m

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2.3 c m

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2.5 c m

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Solution

The correct option is D $2.5 c m$
Option D is correct

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A thick plane convex lens made of crown glass (Refractive index 1.5) has thickness of 3 cm at its centre.An ink mark made at the centre of its plane face, when viewed normal through the curved face, appears to be at a distance x from the curved face. Then, x is equal to

The correct option is D 2.5 cmOption D is correct

A thick plane convex lens made of crown glass (Refractive index $1.5$ ) has thickness of $3 c m$ at its centre.
An ink mark made at the centre of its plane face, when viewed normal through the curved face, appears to be at a distance $x$ from the curved face. Then, $x$ is equal to

The correct option is D $2.5 c m$
Option D is correct