निम्नलिखित में से प्रकाश क – McqOptions

MCQOPTIONS

1.	निम्नलिखित में से प्रकाश का कौन सा रंग शून्य या वायु के अतिरिक्त एक माध्यम में सबसे तेज गमन करता है -
A.	लाल
B.	हरा
C.	बैंगनी
D.	पीला
Answer» B. हरा

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