Ultrasonic waves of frequency 3 × 10⁴ Hz are passed through a medium where speed of sound is 10 times that in air (Speed of sound in air is 300 m/s). The wavelength of this wave in that medium will be of the order of

‘Operation Cactus’ is the name given to Indian Military intervention in

Prof. Vijay Raghavan, an Indian scientist, who has been elected Fellow of Royal Society in…

The UN has recently passed a resolution against human right violation in a South Asian…

A high level committee set up by the Ministry of Housing and Urban Poverty Alleviation…

Suppose, the Naxalites have kidnapped a Deputy Commissioner from Baster region in Chhattisgarh and taken…