সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন 
Which of the following is the mde of propagation of heat from the sun to the earth?
Which of the following is the mde of propagation of heat from the sun to the earth?
- ক. radiation alone
- খ. convection and radiation
- গ. conduction
- ঘ. convection alone
সঠিক উত্তরঃ radiation alone
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Basic Information of Daily Science, Inventions and...