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Question
একটি জলাশয় (pond) এর প্রকৃত গভীরতা (real depth) 6 m. যদি পানির প্রতিসরাঙ্ক (refractive index) 4/3 হয়, তবে এর আপাত গভীরতা (apparent depth ) কত?
4m
5m
4.5 m
5.5 m
ANSWER : 3
Descrption
<p style="margin-left:0px;">একটি জলাশয়ের আপাত গভীরতা হল জলাশয়ের প্রকৃত গভীরতার ওপর পানির প্রতিসরাঙ্কের অনুপাত।</p><p>apparent depth = real depth / refractive index </p><p style="margin-left:0px;">এই ক্ষেত্রে,</p><p>apparent depth = 6 m / (4/3) </p><p>apparent depth = 6 m * (3/4) </p><p>apparent depth = 4.5 m </p><p style="margin-left:0px;">অতএব, জলাশয়ের আপাত গভীরতা <strong>4.5 m</strong>।</p><p style="margin-left:0px;">উত্তর: <strong>4.5 m</strong></p>
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