biconcave lens मीनिंग इन हिंदी

उदाहरण वाक्य

1. By using NIMs as a biconcave lens to focus microwaves, the antenna's sidelobes are reduced in size.
2. A biconcave lens made of flint glass with an index of 1.7 is measured with a lens clock calibrated for crown glass with an index of 1.523.