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Question
5000
A
°
তরঙ্গ দৈর্ঘ্যের আলোক রশ্মি ফোটনের শক্তি কত?
4
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251
e
V
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846
e
V
2
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486
e
V
5
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105
e
V
2
.
483
M
e
V
ANSWER : 3
Descrption
<p style="margin-left:0px;"><strong>2.486 eV</strong>।</p><p style="margin-left:0px;">ফোটনের শক্তি,</p><p>E = h ν </p><p style="margin-left:0px;">যেখানে,</p><ul><li>E হল ফোটনের শক্তি</li><li>h হল প্ল্যাঙ্কের ধ্রুবক</li><li>ν হল ফোটনের কম্পাঙ্ক</li></ul><p style="margin-left:0px;">ফোটনের কম্পাঙ্ক,</p><p>ν = c / λ </p><p style="margin-left:0px;">যেখানে,</p><ul><li>c হল আলোর বেগ</li><li>λ হল ফোটনের তরঙ্গ দৈর্ঘ্য</li></ul><p style="margin-left:0px;">এই ক্ষেত্রে,</p><p>h = 6.626 × 10 − 34 J s </p><p>c = 3 × 10 8 m / s </p><p>λ = 5000 Å = 5 × 10 − 7 m </p><p style="margin-left:0px;">অতএব,</p><p>E = 6.626 × 10 − 34 J s * 3 × 10 8 m / s / 5 × 10 − 7 m = 2.486 eV </p><p style="margin-left:0px;">অতএব, 5000 Å তরঙ্গ দৈর্ঘ্যের আলোক রশ্মি ফোটনের শক্তি <strong>2.486 eV</strong>।</p>
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