Question

將下列光線補(bǔ)充完整，并在框里填上適當(dāng)?shù)耐哥R．

Answer 1

【答案】分析：平行于主光軸的光線經(jīng)凸透鏡折射后將過焦點(diǎn)，凹透鏡對(duì)光線有發(fā)散作用，故應(yīng)埴入凹透鏡．
解答：解：

點(diǎn)評(píng)：本題考查了凸透鏡和凹透鏡對(duì)光線的作用．凸透鏡對(duì)光線有會(huì)聚作用，凹透鏡對(duì)光線有發(fā)散作用．