Question
A plane electromagnetic wave travels in vacuum along
z-direction. What can you say about the directions of its electric and magnetic field vectors? If the frequency of the wave is 50 MHz, what is its wavelength?Solution
How much time does a Geostationary satellite take to complete one orbit, at the height of 35790 km?
I threw a ball horizontally on the road and after covering certain distance, the ball stopped due to
Speed of sound in air is unaffected by change in :
When two charged bodies are properly connected but do not exchange electric current, it indicates that they have the same _____.
The Dimensions of “G” (Universal Gravitation Constant) is:
Which device uses ultrasonic waves for getting images of internal organs of human body?
Sound and light waves both have ___________ .
Which of the following Instrument is used to measure humidity?
Which of the following is a vector quantity?
‘Therm' is the unit of –