2020/2021 WAEC/NECO Answers: 2021 NECO GCE ANSWERS. PHYSICS PRACTICAL



+234 8108515604exampla@gmail.com
+234 81085156048138274394
Notice Our 2021 waec Expo Subscription for answers supply ends by Sunday Night. Note: we don't accept calls.

Refresh this page in every 5 minutes starting from 3 hours to the exam 

This is actually the 2018 NECO GCE ANSWERS. PHYSICS PRACTICAL Answers as questions sent to our subscribers on WHATSAPP, if you are looking for 2020 WAEC/NECO Answers midnight before the exam, try contacting us.

(3a)

In a tabular form 

Under S/N

1, 2, 3, 4, 5, 6


Under R(ohms)

5.0, 10.0, 15.0, 20.0, 25.0, 30.0


Under X(cm)

33.00, 49.50, 60.00, 67.00, 71.00, 74.50


Under K = 100 -X(cm)

67.00, 50.50, 40.00, 33.00, 29.00, 25.50


Under Y = x/k

0.4925, 0.9802, 1.5000, 2.0303, 2.4483, 2.9216


(3avi)

DRAW THE GRAPH




(3avii)

Slope 

R2 - R1/y2 -y1

= 20 - 5/2.0 - 0.5

= 15/1.5

=10.0 ohms


(3aviii)

(i) I must use a freshly charged accumulator. 

(ii) I must take proper readings through my resistance box and potentiometer to avoid error due to parallax


(3bi)

Lost volt is the voltage lost due to the internal resistance of a cell.  It is measured in volts. 


(3bii)

E = I(R+r)

4 = I(2+0.5)

4 = 2.5I

I = 4/2.5

= 1.6A

======================================

(1aiv)

In a tabular form

Under S/N

1.0, 2.0, 3.0, 4.0, 5.0


Under y(g)

8.00, 10.00, 12.00, 14.00, 16.00


[Under yR(g)= 12.5*y]

100.00, 125.00, 150.00, 175.00, 200.00


Under X(cm)

17.60, 14.00, 11.60, 10.00, 8.70


Under XR(cm) = x * 2

35.00, 28.00, 23.20, 20.00, 17.40


Under L = 70/X

2.000, 2.500, 3.000, 3.500, 4.00


DRAW ANOTHER TABLE OF y(g) and L(cm)

Under y(g)

100.00

125.00

150.00

175.00

200.00


Under L(cm)

2.00

2.50

3.00

3.50

4.00


(1av)

DRAW THE GRAPH


(1avi)

Slope(s) = Dy/DL =

y2 - y1/L2 - L1

Where y2 = 175g, y1 = 100g

L2 = 3.5cm, L1 = 2.00cm


Slope(s) = 175 - 100/3.5 - 2


(1avii)

(i)I ensured mass did not touch/rest on the table

(ii)I avoided error due to parallax on metre rule

(iii)I noted zero error on metre rule

(iv)I avoided draught


(1bi)

The principal of moments state that if a body is in equilibrium,then the sum of the clockwise moments about any point on the body is equal to the sum of the anticlockwise moments about the same point


(1bii)

Draw the diagram 


Taking moments about point B ie CWM = ACM

(FA*7) = 10*2

7F = 20

7F/7 = 20/7

F = 2.9N

= 75/1.5

= 50g/cm

======================================


2bi) I Rainbow 

       II Wave length


2v)

​SLOPE​


Slope,s =y2-y1/x2-x1

              =56.7-20/4-1


              =36.7/3


              =12.233


              =12.23


2vi)U = 100/S = 100/12.23 

= 8.176


=8.18


2vii)

– I will avoid error due to parallax while reading the meter rule.

-I will ensure the mass is kept dried before weighing



How do I get 2021 NECO GCE ANSWERS. PHYSICS PRACTICAL BEFORE THE EXAM?
. You can get 2020/2020 Exam answers directly from examplaza.com, visit HERE NOW
Tags:

WHATSAPP GROUP Links: Related Posts

FQA - 2022 JAMB CBT RUNZ WHATSAPP GROUP Links

Udom Chiamaka said: examplaza is real... view all reviews