Q. Optical fibres are used
1.For long distance communications.
2.In sensors employed to measure the inside temperature of jet engines.
3.For spreading sunlight from the roof to other parts of the building.
4.In endoscopy.
Which of the statements given above are correct?
1.For long distance communications.
2.In sensors employed to measure the inside temperature of jet engines.
3.For spreading sunlight from the roof to other parts of the building.
4.In endoscopy.
Which of the statements given above are correct?
✅ Correct Answer: (B)
1, 2, 3 and 4
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