a sunshine recorder globe of 30cm in diameter is made of glass slab of refractive index 1.5.a ray enters the globe parallel to the axis.find the position from the centre of the sphere where the ray crosses the axis.

Answer is 22.5 cm

Remember the formulae for refraction from spherical surfaces. In our case, both surfaces are convex.

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Answer is 22.5 cm

Remember the formulae for refraction from spherical surfaces. In our case, both surfaces are convex.

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