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আপতিত আলোর বর্ণ এবং মাধ্যম দুটির প্রকৃতির উপর নির্ভর করে।
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আপতিত আলোর বর্ণ এবং মাধ্যম দুটির প্রকৃতির উপর নির্ভর করে।