NECO 2023 Physics Practical Questions and Answers
This is to inform all science students that the NECO physics practical 2023 specimen, questions and answers are officially out. POWEROFNAIJA is concerned about the NECO students. For this reason, we have researched and updated this post with necessary materials to help you prepare and pass your NECO examination.
Download the full and correct NECO 2023/2024 physics practical specimen for Senior secondary students 3 (SS3). This is an updated list of specimen as released by the National Examination Council (NECO).
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NECO PHYSICS PRACTICAL ANSWERS
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(1a)
Lo = 13.00cm
L | Li/cm | e= L-Lo/cm | ti/s | T =t/n/S | T²/S²
1 | 21.00 | 8.00 | 7.34 | 0.734 | 0.5388
2 | 26.20 | 13.20 | 8.86 | 0.886 | 0.7850
3 | 30.50 | 17.50 | 9.53 | 0.953 | 0.9082
4 | 35.50 | 22.50 | 10.20 | 1.020 | 1.0404
5 | 40.20 | 27.20 | 10.85 | 1.085 | 1.1772
(1axvi)
Slope, S = (∆e/cm)/(∆T²/S²)
S = ([25.00-5.00]cm)/([1.20-0.40]/S²) = (20.00/cm)/(0.8/S²)
Slope, S = 25.00cm/S²
(1axvii)
K = 4π²S = 4×(22/7)²×25 = 4×(484/49)×25
K = 987.76cm/S²
(1axvii)
(i) I will avoid parallax error when taking reading on the metre rule
(ii) I will check zero error of the stop watch
(1bi)
(i) Pendulum Bob
(ii) A loaded tube suspended in a water
(iii) The vibration of the motion of a plucked guitar string
(1bii)
Mean time = 34.80+36+33.75/5 = 104.55/3
Mean time = 34.85s
Mean period= 34.85/15 = 2.323seconds
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(3avii)
i | R/Ω | R-¹/Ω-¹ | IA
1 | 1.00 | 1.000 | 0.32
2 | 2.00 | 0.500 | 0.32
3 | 3.00 | 0.333 | 0.28
4 | 4.00 | 0.250 | 0.26
5 | 5.00 | 0.200 | 0.24
(3aix)
Slope, S = (∆I/A)/(∆R-¹/Ω-¹) = ([0.32-0.25]/A)/([1.00-0.160]/Ω-¹)
= (0.7/A)/(0.84/Ω-¹) = 0.083AΩ
Intercept, C = 0.24A
(3ax)
K = S/C = 0.083AΩ/0.24A = 0.35Ω
(3axi)
(i) I ensured tight connections to avoid current fluctuation
(ii) I will ensure that the key is opened when the circuit is not in used to avoid the cell being used up
(3bi)
The end of a cell is greater than it’s terminal voltage because there is some potential drop across the cell due to its small internal resistance
(3bii)
I = E/R+r
I = 1.5/6+0.5 = 1.5/6.5
I = 0.23A
