The colour of sky appears blue due to –
The sunlit sky is blue because air scatters short-wavelength light more than longer wavelengths. Since blue light is at the short wavelength end of the visible spectrum, it is more strongly scattered in the atmosphere than long wavelength red light. The result is that the human eye perceives blue when looking toward parts of the sky other than the sun.
B is 25 percent more than C and C is 73 percent less than D. If B is 729, then what is the value of D?
If the length of certain rectangle is decreased by 4 cm and breadth is increased by 2 cm, it would result in a square of the same area. What is the peri...
The ratio between the number of sides of two regular polygons is 1 : 2 and the ratio between their interior angle is 2 : 3. Then the number of sides of ...
The ratio of the length of a rectangle, breadth of the rectangle and the diameter of a circle is 12:11:14. If the area of the circle is 616 cm2
If x4 + x2 y2 + y4 = 37 and x2 – xy + y2 = 5, then what is the value of xy ?
Find the surface area of the smallest cube that can perfectly fit a sphere of volume 972π cm3 inside it.
If a wheel covers a distance of 1760 m in 80 rotations, then the diameter of the wheel is?
A cube of maximum possible volume is cut from a sphere of radius 5√3 cm. What is the ratio of the volume of a cube to that of the sphere?
A wooden cylinder of base radius 14 cm is cut to make a cone of same height and same base radius. Find out the percentage of waste wood?
The area of the base of a right circular cone is 81π cm² and its height is 12 cm. What is the curved surface area (in cm2) of the con...
