It would be reflection, if you are doing a study island test. :)
Look here frenz...actually i mean logically there is no sound applied in a telescope.But there is light applied so far that's why we can see what is happening on the space...we can see any object when there is light we cannot see what is happening in the space using sound.So the principle of light is applied in a telescope...any question can ask me at THIVYASINY SARAVANAN blogspot...
radio telescope detects radio waves and a light telescope views light waves.
Concave mirror of a reflecting telescope
An orbiting telescope is a telescope that transferring infared light into visual light while orbiting in space.An orbiting telescope is a telescope that transferring infared light into visual light while orbiting in space.
A radio telescope detects light in the form of radio waves and a refracting telescope detects light in the visible wavelengths
The light gathering power of a telescope is directly proportional to the area of the objective lens of the telescope.
To make a tv telescope
reflecting telescope gathers light from mirror
A reflecting telescope.
Telescope reflect light
Yes, light gathering power is proportional to the area of the objective. The more light a telescope can gather, the better the telescope will be able to allow the user to see.