Rain drops acquire spherical shape due to
The Surface tension pulls the surface of the drop equally at all points thus produces the spherical shape having the minimum surface area
What is the full form of "RADAR" ?
If a carrier wave of 1000 kHz is used to carry the signal, the length of transmitting antenna will be equal to _____ ?
h = = 3 × 108/106 = 300 m
Quality of transmission depends upon
Quality of transmission is governed both by nature of signal and nature of communication channel/medium.
The rate of change of linear momentum of a body falling freely under gravity is equal to it's ____ ?
Rate of change of impulse equals the force . In case of freely falling body the only force is the weight.
A disk and a sphere of same radius but different masses roll on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ?
Time does not depend on mass, else
=> is least for 'sphere' and
hence least time is taken by sphere.
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