The term ''equinox' means
A). The path which the Earthtakes around the Sun
B). The axis of the Earth around which it rotates
C). When the day and night are of equal duration
D). The time when the Sun seems to be going round and round in the sky in the Arctic but does not go below the horizon
When the day and night are of equal duration
The time when the sun crosses the plane of the earth's equator, making night and day of approximately equal length all over the earth and occurring about March 21 (vernal equinox, or spring equinox ) and September 22 (autumnal equinox).
1. Electrostatic precipitator is used to control the pollution of
2. How much mechanical work must be done to completely melt 1 gram of ice at 0°C ?
5. Danger signals are generally red as red light
6. The metal whose electrical conductivity is more is
7. If a copper wire Is increased to double its length Its resistance will become
8. In the atmosphere ultraviolet rays are absorbed by