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प्रश्न
Infrared radiations are used in warfare. Explain with reason, why?
एक पंक्ति में उत्तर
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उत्तर
Because they are not readily visible and do not absorb in fog or haze, infrared radiations are used as signals in warfare.
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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Light - Frequently Asked Questions in Board Examination [पृष्ठ १५५]
