Question
The layer of atmosphere used for radio- wave
transmission is –Solution
The ionosphere is a part of the upper atmosphere and is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner edge of the magnetosphere. It has practical importance because, among other functions, it influences radio propagation to distant places on the Earth.
What is the main effect of increasing the temperature of a gas at constant volume?
Energy that is produced commercially from coal is called –
Two charges, +3 µC and –3 µC, are placed 1 m apart in vacuum. What is the electrostatic potential energy of the system?
In the equation of motion (2as = v² - u²), (s) represents:
A pulse of light duration 10-5 s is absorbed fully by a little object initially at rest. If the power of this pulse is 45 × 10-3...
What term refers to the superposition of two or more coherent waves to produce regions of maxima and minima?
For a projectile, maximum range is obtained when angle of projection is:
A particle with charge q = 2 μC moves through a magnetic field B = 0.5 T with velocity v = 4 m/s at angle 60°. Find magnitude of magnetic force.
Which of the following principle is used to produce low-temperatures'?
