जब श्वेत प्रकाश एक काँच के प्रिज्म पर आपतित होता है, तो इसका विक्षेपण (dispersion) होता है। यह परिघटना किसके कारण होती है?

When white light is incident obliquely on a glass prism, which of the following statement(s) is/are NOT true? (i) Red colour undergoes minimum deviation. (ii) The speed of violet light is the least while travelling through the prism. (iii) Refractive index of green colour is more than the violet colour. (iv) Refractive index of red colour is more than blue colour.

A beam of white light passes through a glass prism and a spectrum is obtained. The color component that bends the least is ______.