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World Happiness Report 2023, has been released, and it shows that Finland remains the happiest country in the world for the sixth year in a row. Denmark, Iceland, Israel, and the Netherlands are the next happiest countries, with other European countries such as Sweden, Norway, Switzerland, and Luxembourg also making the top 10.
A spherical black body with a radius of 8 cm radiates 450-watt power at 500 K. If the radius were halved and the temperature doubled, the power radiated...
The base of an electric iron is brightly polished mainly -
The intensity of any wave is proportional to which quantity?
Which of the following phenomena establishes the transverse nature of light waves?
The order of wavelengths for ordinary light is:
An object of mass ‘m’ be made to fall freely from a height ‘h’. At the start the potential energy is _____ and kinetic energy is ______.
...`Short-sight' in human eye can be corrected by using proper –
What is the work done by a centripetal force on an object moving in a circular path at constant speed?
What does Galvanometer do?
