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The primary radiation that is initially produced within a fluorescent lamp is analogous to that emitted by a low pressure mercury lamp. Fluorescent lamps produce UV radiation by ionizing low-pressure mercury vapour. A phosphorescent coating on the inside of the tubes absorbs the UV and converts it to visible light.
The sum of the total surface areas of two cubes is 1926 cm2. If the product of the length of their edges is 136 cm2, then find the...
A race track is in the shape of a rectangle with length of 75 metres and area of 3000 m2. A car takes 20 seconds to make one lap around the p...
What is the edge length of the cube whose volume is 1016 cm3 more than the sum of volumes of cubes having edge lengths of 6 cm, 8 cm and 10...
The volume of cone is 1320 cm3. If its height is 1.4 cm then find the radius of the cone.
The length, breadth and height of a storeroom are 17m, 10m and 12m respectively. If each box occupies 40 m3 of space, then how many boxes can...
What is the difference between (in m2) the area of a circular field of radius 35 metres and area of a rectangular piece of land having its di...
A hemispherical bowl with an internal radius of 15 cm is full of liquid. This liquid will be filled in cylindrical bottles with a radius of 5 cm and a h...
Inside a square land having perimeter equal to 116 metres, leaving aside a circular land of radius 14 metres, the remaining land needs to be levelled at...
A right circular cylinder of height 15cm is covered by a rectangular tin foil of size 15cm ×24cm. the volume of the cylinder is.
