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Question

দৃশ্যমান আলোর শক্তিপাল্লা হচ্ছে-

1.55 eV - 3.10 eV

1.0 eV - 4.5 eV

3.10 eV - 3.10 eV

6.5 eV - 10 eV

ANS : 1

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