What is color ? कलर क्या है What is color wavelength ? कलर की तरंग धैर्य क्या है।

[@ayushirastogi6681]

Good job

[@keshavkumar9095]

Thank you so much !!

[@jitendersingha2409]

Great Mr Keshav keep it up
u r making great blogs on great topics. Well done bro

[@keshavkumar9095]

Thank you so much jitender !!

[@tinkigandharv8721]

❤

[@tinkigandharv8721]

Nice

[@mohinikishore4013]

That's cool.. u r doing good job. Keep it up🤘🌻

[@keshavkumar9095]

Thank you so much mohini !!