Same chapter3 marksDifficulty: Medium
Arrange the electromagnetic spectrum in order of increasing frequency and give one use of any three of its parts.
Electromagnetic Waves
3 marksDifficulty: Medium
State four properties of electromagnetic waves.
Original Khojo Papers practice question — not from a past board paper.
Answer
They are transverse, with the electric and magnetic fields perpendicular to each other and to the direction of propagation. They need no material medium and travel in vacuum at 3 × 108 m s−1. They carry energy and momentum, and they are not deflected by electric or magnetic fields because they carry no charge.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The ratio of the amplitudes of the electric and magnetic fields equals the speed of light.
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