Diffraction grating : Wavelength of Hg Spectrum - Normal Incidence

[@fraudgaming8134]

Showing the slit that awesome❤

[@jaykumarkota3161]

Excellent mam❤️

[@aleenajohnson5335]

Very helpful

[@sayoojcv4663]

Very helpful ❤️

[@letsgetit2983]

Really helpful.. 🥰

[@msedgar1969]

2nd order കിട്ടുന്നില്ല, എന്ത് കൊണ്ട് ആണ്?

[@meerak2395]

Thank u mam

[@reshmaslukose6424]

❤❤❤

[@Gamingboy1528-e1z]

Today my xam

[@Gamingboy1528-e1z]

Tnx a lot mam

[@balajm2400]

Ok