In a Young's double slit experiment, the source is white light. One of the holes is covered by a red filter and another by a blue filter. In this case

Options

A. there shall be alternate interference patterns of red and blue
B. there shall be an interference patterns for red which is different from that of blue
C. there shall be no interference fringes
D. there shall be an interference pattern for red mixing with one for blue

Answer

C

Explanation

In YDSE, we require monochromatic light for the formation of fringes. In this case, from the source of white light, red filter will transmit red light and blue filter will transmit blue light. Thus the two sources (holes) are not coherent and are sending waves of two wavelengths. hence interfernece fringes will not be obtained. option (c).