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টেলিভিশনে কোন তরঙ্গ ব্যবহৃত হয় ?

Ferdows blog

প্রশ্ন: টেলিভিশনে কোন তরঙ্গ ব্যবহৃত হয় ?

ক. অবলোহিত রশ্মি

খ. রেডিও ওয়েভ

গ. আলট্রান ভায়োলেট

ঘ. দৃশ্যমান রশ্মি

উত্তর: (খ)রেডিও ওয়েভ ।

ব্যাখ্যা: টেলিভিশনে যে তরঙ্গ ব্যবহৃত হয় তার নাম " রেডিও ওয়েভ " ।

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