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Pick the odd one out.(a) LASER(b) LED(c) Sound waves(d) Radio transmittersI had been asked this question in exam.I need to ask this question from Coherent and Incoherent Addition of Waves in portion Wave Optics of Physics – Class 12 |
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Answer» CORRECT option is (B) LED To explain: LED is the odd one out. LED is short for light-emitting diode. LED is not a COHERENT source, whereas, others are examples of coherent sources. The light emitted from an LED is neither spectrally coherent nor even highly MONOCHROMATIC. |
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