Physics II Lab w answers_Part_47

Physics II Lab w answers_Part_47 - T (K) 1/T (K-1 ) 80 100...

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105 2. Verification of photocurrent (I ph ) with variac voltage (V) Table 2. Photocurrent I ph (mA) ln I ph Variac Voltage (V) Filter 1 =_____ Filter 2 =_____ Filter 3 =_____ Filter 1 =_____ Filter 2 =_____ Filter 3 =_____ 80 100 120 140 160 180 200 220 3. Calculation of temperature (T) of filament Table 3. Variac Volatage(V) Filament Current I (A) Resistance R = V/I ( Ω ) T ( o C) Calculated
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Unformatted text preview: T (K) 1/T (K-1 ) 80 100 120 140 160 180 200 220 106 4. Plot graphs of ln I ph Vs 1/T (K-1 ) for the three filter colours. 5. Calculate the Planck s constant from the slope of the graphs. Calculation: Results: The measured value of Planck s constant h = ______________________ The known value of Planck s constant h = ______________________ % error in the experiment:...
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Physics II Lab w answers_Part_47 - T (K) 1/T (K-1 ) 80 100...

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