[2019 DSE] Physics 物理 操題區

得1日拎唔切啲手感又病病地

多謝巴打

我想下而家應該做咩好

mc fix死咗喺25/33 最後一日有冇咩方法急救下

多謝巴打，即刻清一清c1,2同4

承你貴言

得翻一日，predict 得 1，温咩好

Dispersion of light係因為light 喺唔同material 行既speed 唔同咁關唔關wavelength事 ？

同埋for young’s double slit experiment,
點解要coherent , similar amplitude 同埋separation between S1,s2 cannot be too far apart?

係DSE, 你知道speed depends on medium, frequency depends on source, 而wavelength 係speed 同frequency ratio 就得。

而色散，depresion of light, 唔同色嘅光有唔同speed,所以有唔同angle of refraction。

而Dispersion 係大學level 嘅解釋係因為phase velocity depends on frequency，或者簡化咁講，個refractive index depends on wavelength。

好confused諗緊係咪因爲wavelength唔同所以wavelength longer嗰個會bend more , 好似water wave咁