This Was A Determination Of Planck S Constant Lab Here Is The Table Of Some Of The Results Please Solve All These Questi 2 (31.12 KiB) Viewed 10 times
AV Blv h= C Rheostat value Colour of Led Wavelength Knee (A in nm) Voltage (V) Red 650 2.25 Ammeter reading (in mA) 1.875 1462.5 7.8*10-34 500 Green 510 2.52 1285.5 560 6.85*10-34 2.100 Yellow 570 2.25 1282.5 500 6.84*10-34 1.875 2.86 2.38 Blue 635 Infrared 2.25 1.875 500
2. Calculate the value of Planck's constant for blue LED, for its knee voltage. 3. Calculate the wavelength of IR LED by comparing with Red LED at their corresponding knee voltage. 4. Calculate the value of IR LED by companng with Green LED at their corresponding knee voltage. 5. Calculate the wavelength of IR LED by drawing a graph between voltage and wavelength.
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