Question
The phenomenon of light associated with the appearance
of blue colour of the sky is βSolution
During daylight, the sky appears to be blue because air scatters blue sunlight more than it scatters red. At night, the sky appears to be a mostly dark surface or region scattered with stars. Except for light that comes directly from the sun, most of the light in the day sky is a result of scattering, which is dominated by a small- particle limit called Rayleigh scattering.
If the circumference of a circle is 44 cm then find the area of the circle?
The angle of elevation of the top of a tower from a point on the ground which is 45 meters. away from the foot of the tower is 30Β°. The height of the t...
Mr. Arun rows a boat with the stream at 10 km/hr and against the stream in 5 km/hr. In still water, his rate of rowing in km/h is:
In the figure given below, PQRS is a parallelogram in which PN and PM are perpendicular to QR and RS, respectively. If RS = 81 cm, PM = 42 cm and PN = 5...
What is the volume of a cylinder if the radius of the cylinder is 12cm, and the height is 15 cm? (Take Ο = 3.14)
PQRS is a rectangle. T is a point on PQ such that RTQ is an isosceles triangle and PT = 5 QT. If the area of triangle RTQ is 12 β3 sq.cm, then the ar...
If the volume and radius of a cylinder is 24640 cm3 and 28 cm respectively then find the height of the cylinder?
If the volume and radius of a cylinder is 7700 cm3 and 14 cm respectively then find the height of the cylinder?
The length of sides of a square is twice the radius of a circle and perimeter of a rectangle is half the perimeter of the square. If the sum of length a...
If the numerical value of twice the curved surface area of a right circular cylinder is equal to the numerical value of its volume, then what is the num...
