题目6单选题
在球面折射中,如果入射角为 <img src="https://tihai-oss-cloud.itihey.com/img/d0a4f9b5f109693bdf8e792864e01245.png">,折射角为 <img src="https://tihai-oss-cloud.itihey.com/img/0742d83fbcae72e36eb493411db07710.png">,则折射率 <img src="https://tihai-oss-cloud.itihey.com/img/5a5a1add8069cfe29cbef2da769db794.png"> 的关系是A. <img src="https://tihai-oss-cloud.itihey.com/img/287e7a3e2ee42f6554a99d9dfee44aa8.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/f812ec17b17b339913552a067f27e7c8.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/1ddb863de6e1b6489d28049c423093b4.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/0c2fa5b41ae9c095ed2d0c3fd4c7c6eb.png">