Question 15

The figure shows a ray of light falling normally on the face AB of an equilateral glass prism having refractive index 3 / 2, placed in water of refractive index 4 / 3. Will this ray suffer total internal reflection on striking the face AC? Justify your answer.

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A polythene piece rubbed with wool is found to have a negative charge of 3 × 10

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(b) Is there a transfer of mass from wool to polythene?

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