10. The shape of the earth is
A taco
b. A carrot
C. A sphere
d. A potato

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

Could someone . i have tried to solve myself but my calculation is off

Rohit is trying to tune an instrument