Q-: निम्नलिखित में से किस रंग की तरंगदैर्ध्य न्यूनतम होती है
Which of the following colors has the shortest wavelength
(a) अवरक्त किरणें (infrared rays)
(b) पराबैंगनी किरणें (ultraviolet rays)
(c) गामा किरणें (Gamma rays)
(d) इनमें से कोई नहीं (none of these)
Answer -: c
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