Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
Microwave oven consumes less power due to
small frequency of radiation
short wavelength of radiation
arge frequency as well as wavelength of radiation
small frequency as well as wavelength o radiation
The sun is constantly radiating energy and yet its surface temperature is nearly constant at 6000°C. The constancy of solar temperature is due to:
fission
radioactivity
fusion
black hole evaporation
An annular solar eclipse occurred during January 2010 with duration of annularity around 12 minutes. It is predicted that such long annular duration will not occur till the year 3043. Such prediction is possible due to:
Einstein’s theory of relativity
Darwin’s theory of natural selection
Newton’s theory of gravitation
Hawking’s theory of black hole
Choose the correct answer from the alternatives given. Metal pipes used to carry water sometimes burst in the winter. This is because
Metal contracts more than water
Water expands when it freezes
Metal expands more than water
Outside of the pipe contracts more than inside
Which one among the following statement is not correct?
In progressive waves, the amplitude may be constant and neighboring points are out of phase with each other
In air or other gases, a progressive antinode occurs at a displacement node and a progressive node occurs at the displacement antinode
Transverse wave can be polarized while longitudinal wave cannot be polarization
Longitudinal wave can be polarized while transverse wave cannot be polarized
