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CBSE Class 9 Answered

please tell me
Asked by ketagajjar | 04 Dec, 2009, 12:52: PM
answered-by-expert Expert Answer

The torch light is polychromatic i.e. consists of many different wavelengths and is not coherent i.e. they have phase differences.

Again the bulb in the torch emits this light in all directions and the parabolic reflectors focuses them into the circular illumination that one observes.

Regards,

Team,

TopperLearning.

Answered by | 04 Dec, 2009, 03:21: PM
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