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कथन (A): खतरे का सिग्नल लाल रंग का बनाया जाता है। कारण (R): लाल रंग का प्रकीर्णन सबसे कम होता है। सही उत्तर का चयन नीचे दिये गये कूट की सहायता से कीजिए ─कूट:

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कथन (A): खतरे का सिग्नल लाल रंग का बनाया जाता है। कारण (R): लाल रंग का प्रकीर्णन सबसे कम होता है। सही उत्तर का चयन नीचे दिये गये कूट की सहायता से कीजिए ─<br />कूट:






 
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