Which among the following waves is used for communication by artificial satellites
1). Microwaves
2). Radio waves
3). A. M.
4). Frequency of 101 series
1. Eclipses occur due to which optical phenomena
2. The electric current in a metal wire is due to the flow of -
4. Which circuit is used to store one bit of data ?
6. Find the acceleration (in m/s2) of a body which accelerates from 25 m/s to 30 m/s in 10 seconds
7. The distance between node and adjacent antinode is 30 cm. The wavelength is
8. Which of the following statements is true when we see ''rainbow' ?
9. ?Which of the following?electromagnetic waves has the longest wavelength?