If the velocity and wavelength of light in air is Va and λa, and that in water is Vw. and λw, then the refractive index of water is,
A. \(\frac{V_{\mathrm{W}}}{V_{\mathrm{a}}}\)
B. \(\frac{V_{\mathrm{a}}}{V_{\mathrm{w}}}\)
C. \(\frac{\lambda_{\mathrm{W}}}{\lambda_{\mathrm{a}}}\)
D. \(\frac{V_{\mathrm{a}} \lambda_{\mathrm{a}}}{V_{\mathrm{w}} \lambda_{\mathrm{W}}}\)
Answer:B
If the velocity and wavelength of light in air is Va and λa, and that in water is Vw. and λw, then the refractive index of water is,
A. \(\frac{V_{\mathrm{W}}}{V_{\mathrm{a}}}\) B. \(\frac{V_{\mathrm{a}}}{V_{\mathrm{w}}}\) C. \(\frac{\lambda_{\mathrm{W}}}{\lambda_{\mathrm{a}}}\) D. \(\frac{V_{\mathrm{a}} \lambda_{\mathrm{a}}}{V_{\mathrm{w}} \lambda_{\mathrm{W}}}\)