Question
What is the primary reason for the blue color of the
sky?Solution
The sky appears blue primarily due to Rayleigh scattering. This phenomenon occurs when sunlight passes through the Earth's atmosphere, and the shorter wavelengths of light (like blue) are scattered in all directions by the molecules and small particles in the air. Since blue light is scattered more than other colors, the sky appears blue to us.
The average of a set of 25 numbers is 98. For the first 14 numbers, the mean is 84, and for the last 8 numbers, the mean is 112. ...
The average age of three children is 24 years. If their ages are in the ratio 5:6:7. Find the age of the youngest child.
The average age of a class of 20 girls is 12 years. If 4 new girls having average age of 9 years join the class, then the average age of the class becomes:
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Average age of a class of 41 students is 17 years. Average age of the class is increased by 18 months if the age of the teacher is included. Find the ag...
The average weight of five friends A, B, C, D and E is (x+8) years while the average weight of C and E is (x-8) kg. If the weight of another person F is...
The average monthly fee of all 45 students in a class is Rs. 9,500. After an increment, the new monthly average fee of each student becomes Rs. (9500 + ...
- What is the average of the squares of the first 17 natural numbers?
The average of a set of 60 numbers was initially calculated as 40. However, it was later discovered that two numbers were incorrectly recorded as 68 and...
The average expenditure of a man for the first 9 month is Rs.5000 and for the next 3 months is Rs.8000. If he saves 12000 in that year then find his ave...
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