Question
The phenomenon of light associated with the appearance
of blue colour of the sky is –Solution
During daylight, the sky appears tobebluebecauseairscattersbluesunlightmore than it scatters red. At night, the sky appears to beamostlydarksurfaceorregionscatteredwith stars. Except for light that comes directly from thesun,mostofthelightinthedayskyisaresult of scattering, which is dominated by a small- particle limit called Rayleigh scattering.
Sonali applied for a job of Science teacher in a school. In the test for job, she scored 8 in Physics, 8 in Chemistry, 6 in Biology, and 6.5 in the inte...
Consider three positive numbers that form a ratio of 2:3:4. If the sum of the squares of these numbers is 2349, what is the average of the largest and t...
- The average marks of Priya in 8 subjects was mentioned as 59. Her marks in English and Biology were wrongly recorded as 61 and 48, whereas they should have...
- The average of ten numbers is 80. When five more numbers are included, the average increases by 4. Find the average of the numbers included.
The average weight of a group of five persons, A, B, C, D, and E is 60 kg. If another person K joins the group then the average weight of the group is d...
The average number of laddus distributed among five children is 14. If each child received 1 laddu more than the child before, then find the highest num...
- The average age of a team of 20 men is 36 years. If the total age of a group of 16 women is 20% less than the total age of the team of men, then what is th...
Average of five consecutive numbers is 48. Find the sum of smallest and largest number.
- The average marks of 55 students in a class were calculated as 72. However, there were errors in recording the marks of four students. The incorrect marks ...
The mean purchase price of items 'X' and 'Y' is Rs. 600. Article 'X' is sold with a 20% profit, while article 'Y' is sold with a 30% profit. Calculate t...
