बोलोमीटर का प्रयोग किसे मा – McqOptions

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1.	बोलोमीटर का प्रयोग किसे मापने के लिए किया जाता है।
A.	वेग
B.	आवृत्ति
C.	विद्युत चुंबकीय विकिरण
D.	तरंगदैर्ध्य
Answer» D. तरंगदैर्ध्य

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