搜搜做题作业网英语翻译A point source of light is placed in a liquid.Light rays
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英语翻译
A point source of light is placed in a liquid.Light rays from the source leave the liquid surface through a circular area of radius 10 cm .The refractive index of the liquid is 1.3.The depth of the source below the liquid surface is?
A.5.7cm B.8.3cm C10cm D.20cm
A point source of light is placed in a liquid.Light rays from the source leave the liquid surface through a circular area of radius 10 cm .The refractive index of the liquid is 1.3.The depth of the source below the liquid surface is?
A.5.7cm B.8.3cm C10cm D.20cm
某液体下有一光源,光线散射出来时在液体表面形成半径10CM的圆,已知该液体对光的折射率为1.3,请问光源在液体下多深.
设深度为X,则 折射率＝sqr(圆直径平方＋4x深度平方）/圆直径
即：1.3＝sqr(100+4x^2)/10
13^2=100+4x^2
得 x = 8.3/2 cm,上面答案均不对
设深度为X,则 折射率＝sqr(圆直径平方＋4x深度平方）/圆直径
即：1.3＝sqr(100+4x^2)/10
13^2=100+4x^2
得 x = 8.3/2 cm,上面答案均不对
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