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
at sunset or sunset the sun appears red this is because
The is colder at sunset and sunrise
Scattering due to dust particles and air molecule cause this phenomenon
Refraction causes this phenomenon
Diffraction sends red rays to the earth at these times
If there was no atmosphere then the length of the day on the earth would be?
Increased
Decreased
Remain the same
Depend on the weather
Instruments can be protected from outside magnetic effects by surrounding them with?
Glass shield
Iron shield
Rubber shield
Brass shield
Which among the following is the best insulter
Wood
Glass
Dry air
Cloth
