A Young's double-slit experiment is performed using light of wavelength

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

A Young's double-slit experiment is performed using light of wavelength λ=5000 A˚\lambda=5000\,\text{\AA}, which emerges in phase from two slits separated by d=3×10−7 md=3\times10^{-7}\,\text{m}. A transparent sheet of thickness t=1.5×10−7 mt=1.5\times10^{-7}\,\text{m} is placed over one slit. The refractive index of the sheet is μ=1.17\mu=1.17. The central maximum of the interference pattern now appears at: (DD is the distance between the slits and the screen.) (a) 0.085D0.085D (b) DD (c) 1.2D1.2D (d) 0.5D0.5D

Related theory

Browse the problem library