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Why does sun appear flat during sunrise and sunset?
The sun rays have to travel by a larger atmospheric distance. Most of the blue light and shorter wave lengths are removed by scattering.
Only red color, which is least scattered is received by our eyes and appear to come from sun .As the appearance of sun at sunset or sunrise looks almost flat
(i)Cathode waves always travel in straight path. (ii) Cathode rays exert mechanical force on the objects they strike. (iii) Cathode rays make fluorescence. (iv)
The voltage across the terminals of a cell when it is supplying current to external resistance is known as potential difference or final voltage. Potential energy dissimilarity is
Average acceleration is described as the change in velocity over a given time interval Δt. Hence, The instantaneous acceleration of given particle is the rat
What are the basic block structure of communication system? What do you understand by sky wave propagation?
Three children are riding on the edge of a merry-go-round that is 100 kg, has a 1.60-m radius, and is spinning at 20.0 rpm. The children have masses of 22.0, 28.0, and 33.0 kg. If
The points where amplitude is minimized are called as nodes.
The length of a wire vibrating with a frequency of 340 Hz is 1m . It its length is changed to 1.6 m, determine the frequency. Name any two musical instruments whose working li
The amplified video signals are amplitude modulated using a suitable r.f. carrier wave in a transmitter called ‘AM' picture transmitter. Similarly, the amplified audio signals are
calour formed in pure and impure spectrum
trying to find out what matter stands for such as M=mass but do not know the other letters
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