Question

why can you see an electric bulb at night when it is switched on

Answer 1

because at that time, it is the only source of light that falls on our retina. So, we can easily identify a light source even from far away.

Hope you understand

Please mark my answer as brainliest one :-)

Answer 2

इन डार्क ओनली सोर्स ऑफ लाइट