Two light waves from S1 and S2 on reaching points P and Q on a screen in young’s double slit experiment have a path, difference zero and λ /4 respectively. The ratio of light intensities at P and Q will be
A. 4 : 1
B. 3 : 2
C. √2
D. 2 : 1
Answer:D
Two light waves from S1 and S2 on reaching points P and Q on a screen in young’s double slit experiment have a path, difference zero and λ /4 respectively. The ratio of light intensities at P and Q will be
A. 4 : 1 B. 3 : 2 C. √2 D. 2 : 1