What type of electromagnetic radiation can be used to tak...
What type of electromagnetic radiation can be used to take photographs in the haze?
Radio waves
infrared rays
Visible light
Gamma rays
Correct answer is B
Infrared rays are easily detected by special photographic films and it can be used for taking picture in haze
Which of the following statements about friction is NOT correct? ...
An object at rest is said to possess ...
When blue and green colours of light are mixed, the resultant colour is ...
The main reason why a.c. is transmitted at very high voltage and low current is that ...
In which of these fields are repulsive forces NOT experienced? I. Magnetic field II. Gravitati...