সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন 
Dry sand appears bright while wet sand appears dark because of--
Dry sand appears bright while wet sand appears dark because of--
- ক. optical illusion
- খ. diffraction
- গ. reflection
- ঘ. refraction
সঠিক উত্তরঃ reflection
এ সম্পর্কিত আরো প্রশ্ন দেখুন
- Nameplates made of brass get discolured in air because of the presence of which of the following gases in the air?
- Which among the following is a natural polymer?
- Main cause of night blindness is deficiency of Vitamin---
- On burning charcoal which of the following gases is produced?
- Every atom of Carbon di-oxide contains -- Oxygen and --- Carbon.
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Basic Information of Daily Science, Inventions and...