question_answer

In a Young's double slit experiment with slit separation 0.1 mm, one observes a bright fringe at angle \[\frac{1}{40}\] rad by using light of wavelength\[{{\lambda }_{1}}\]. When the light of wavelength \[{{\lambda }_{2}}\] is used a bright fringe is seen at the same angle in the same set up. Given that \[{{\lambda }_{1}}\] and \[{{\lambda }_{2}}\] are in visible range (380 nm to 740 nm), their values are - [JEE Main Online Paper (Held On 10-Jan-2019 Morning]

A) 400 nm, 500 nm                        

B) 625 nm, 500 nm

C) 380 nm, 500 nm            

D)   380 nm, 525 nm