Physics
The sky in a direction other than that of the sun appears …………… to an observer on the moon.
- red
- blue
- orange
- black
Answer
black
Reason — Unlike earth, which has an atmosphere that scatters sunlight in various directions, the moon lacks an atmosphere. As a result, there is no scattering of sunlight to create the blue sky that we see on earth. Hence, the sky in a direction other than that of the sun appears black to an observer on the moon.
Related Questions
To an astronaut in a space-ship, the earth appears —
- white
- red
- blue
- black
The red colour of the sun at sunrise and sunset is due to which of the following phenomenon ?
- deviation
- dispersion
- both deviation and dispersion
- scattering
The danger signal is red because its wavelength is the …………… and therefore it gets ………… the least.
- least, deviated
- longest, scattered
- longest, dispersed
- least, scattered
When sunlight enters the earth's atmosphere, state which colour of light is scattered (i) the most, and (ii) the least.