Skip to main content

NECO 2019 Physics Practical Question and answer available now

-

2019 Examination HelpDesk 📚
📍WAEC RUNZ📍NECO RUNZ📍JAMB RUNZ
📍NABTEB RUNZ📍GCE RUNZ📍DAILY PAYMENT


Examkingvibe Answer Page•
🔐CLICK HERE TO UNLOCK THE ANSWER WITH PIN

Trending Posts 🔥

NECO 2019 Physics Practical Question and answer available now

     09 Jun 2019
NECO 2019 Practical Specimens (Agric,Biology,Physics,Chemistry)


PASSWORD FREE FOR TODAY = 1990

NO FREE ANSWER TOMORROW WE JUST DO THIS FOR START



For Whatsapp user Please, Make Sure You Get A WHATSAPP Phone While Subscribing, And Send Your details Direct To Our Whatsapp Contact. 07011678965






ATTENTION :- PLEASE DONT COME HERE FOR FREE ANSWER… BE WARNED

==Whatsapp: #500 MTN CARD

== Online PIN:: #500 MTN CARD

CLICK HERE TO VIEW OUR ANSWER PAGE WITH YOUR PASSWORD







Contact mir examking ditto on facebook
Whatsapp MEANS all answers(theory & obj) will come direct to ur phone on Whatsapp.
Online PIN MEANS The Pin to access our answers online via examkingvibe/answers will be sent to u at least 2hours before the exam to access our answers
Send The Following details:-
(i) MTN CARD Pin(s)
(ii) Your Name
(iii) Subject
(iv) Phone number
===> 07011678965 via sms or Whatsapp
NOTE:- All SMS Sent To The Above Number Are Attended To, Our Phone Number Might Be Diverted To Avoid Distraction. Always Send Us SMS Of Your Complaint Even When Our Number Is Not Available, Your Message(s) Will Get To Us And We Will Reply You ASAP.

Or call 07030856640

IF YOU NEED THE ANSWER ON WHATSAPP IS AVAILABLE, IT COSE #800.. ADD US ON WHATSAPP WITH => 07011678965



*NECO-PHYSICS-PRACTICALS-ANSWERS*

 ==========

 (1)
Centre of gravity C G = 50.0cm
Tabulate
Y(cm). |10|15|20|25|30|
K(cm). |31.2|33.5|36.0|38.2|40.6|
X(cm). |21.2|18.5|16.0|13.2|10.6|
K¹(cm). |27.0|29.7|33.0|35.5|38.4|
X¹(cm). |17.0|14.7|13.0|10.5|8.4|

 (1x)
Slope = increase in y-axis /increase in x-axis

 From the graph, 
Slope = (35-10)cm/(16-6)cm
Slope (s) = 35/10=2.5

 (1xi)
K =M1-Sm/S-1 
M1= 100g , Sm =50m , S =2.5

 K = 100-50/2.5-1 = 50/1.5
= 500/15=100/3
= 33.3g/cm

 Use any one

 (1ix)
GRAPH1: CLICK HERE FOR THE GRAPh1
(1ix)
Graph2:
CLICK HERE FOR THE GRAPH2

 (1xii)
(i)i avoided drought by closing the window
(ii)i avoided error due to parallax when reading the meter rule 

 (1bi)
couple is a pair of forces, equal in magnitude, oppositely directed, and displaced by perpendicular distance or moment. 

 (1bii)
CLICK HERE FOR THE IMAGE

Let the mass of beam = m
Taking moment about point C 5cm clockwise = sum of anitclockwise i;e moment
; 50*0.5=mx0.2
m=50*0.5/02=250/2=125g
Mass of the beam = 125g
==========
(3)
Tabulate
K,M,F 
E=3.0v
L(cm).|20|30|40|50|60|70|
I(A). |1.30|1.20|1.10|1.00|0.90|0.95|
X=E/I(V/A).
|2.31|2.50|2.73|3.00|3.33|3.16|

 (3)
CLICK HERE FOR THE GRAPH

 (3ix)
Slope = ΔL/Δx = 66-12/7-4 = 54/3=18cm/Ω
Intercept ,c (couldn't be shown on graph) 

 (3x)
Evaluating K =4.9 10^-7 S
K =4.9 × 10^-7 × 18
K=8.82 × 10^-6cm/Ω
(3xi)
- I ensured tight connections 
- I avoided error due to parallax on the ammeter 

 (3bi) 
- Keep the top or terminals clean 
- Do not tighten or removed cables while charging or discharging 
(3bii) Using ohms law, R = V/I=3.5/0.25
=14Ω
=========
Completed
=========
NECO PHYSICS PRACTICAL 


PHYSICS PRACTICAL

(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)
Clockwise moment =Anti
clockwise moment
10×5 = RB × 7
RB= 10×5/7
RB=50/7
RB=7.14
RA + RB=10
RA+7.14 =10
RA=10 - 7.14 =2.86N


(1vii)

(PICK TWO)

(i)I ensured mass did not tourch/
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

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


No2a........


2bi)  
A couple is a pair of forces, equal in magnitude, oppositely directed, and displaced by perpendicular distance or moment.

(2xiv) 
- I ensure both the object and the pin were in straight lines so as to avoid error due to parallax 
- I ensured that all the pins were vertically placed


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


(NUMBER 3)

(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
I=1.6A



(3av) 
E=3.0v

(3avii) 
Tabulate

Under L(cm): 20.0; 30.0; 40.0; 50.0; 60.0; 70.0; 
Under I(A): 0.70; 0.60; 0.55; 0.50; 0.45; 0.40; 
Under X=E/I(Ohms): 4.2857; 5.0000; 5.4545; 6.0000; 6.6667; 7.5000; 

(3aix) 
slope = ΔL/ΔX = 66 - 12/7 - 4
= 54/3 = 18cm

Intercept, C


(3viii)
(Pick two)
(Precaution)

(i)I would ensure that the key is
opened when circuit is not in use
to avoid the cell being used up

(ii)I would ensure that the
electrical wires are tightly
connected

(iii)I would ensure clean
terminals
_________________________________
Q1.
determine the slope of the graph
and the intercept c
- evaluate k1 = k1 = 4π2/s and k2
=
(Xiii)- state any two of the
following precautions
- Avoided conical oscillations
- Ensured firm suspension of
pendulum
- Ensured reading is repeated
(shown on the table
- Avoided draught
-Corrected/noted for zero error
of metre rule/ stop match/clock
- Avoided parallax error in
reading metre rule/ stop clock

(b) (i) The period of oscillation of
a body is the time taken for the
body to make one complete to
and from movement

(ii) When a body is falling under
its weight (alone), the rate of
increase of its velocity with time
(as a result of the earth’s
gravitational pull) is the
acceleration of free fall due to gravity



(3ax) 
K = 4.9×10^-7
      K = 4.9×10^-7 × 18
      K = 8.82×10^-6cm/ohm

(3axi) 
-I ensured tight connections.
-I avoided error due to parallax on the ammeter. 

(3bi) 
keep the top or terminals clean. 
Do not tighten or remove cables while charging or discharging. 

(3bii) 
Using ohm's law
R = V/I = 3.5/0.25 = 14ohm
=======================================





FOLLOW US ON










Stay Updated with all Nigeria University News, Polytechnic News, JAMB UTME, Post-UTME, WAEC, NECO, NABTEB, GCE and more;




Examking
07011678965
For Any Enquiry, Please Do Not Call US. Whatsapp Or Text Only: 07011678965(We Reply Text Faster)
(c) Examkingvibe.com
Powered By izotop

Comments

Post a Comment

Trending Posts 🔥

FREE WAEC 2019 GEOGRAPHY PRACTICAL QUESTION AND ANSWER

-
Image
WAEC 2019 Geography  Praticals Question and  Answers Expo. We are here to offer you latest answers on WAEC 2019 . In other to Get our 100% answers for WAEC 2019 GeographyYou have to subscribe for it following the Procedure bellow.                WAEC 2019 Geography  Praticals Question and  Answers Expo.                                                                             GEOGRAPHY 2019 REFRESH EVERY 5MINS........... (1a)in picture below (1bi) (i) The relief is made up of mainly lowland. (ii) The highland is in the north west of the map. (iii) The rivers flow from North to South. (1bii) (i) The rivers take their sources mainly from the north East Highland. (ii) The drainage pattern is ...
Read more

WAEC 2019 PHYSICS PRACTICAL SOLUTION

-
Image
WAEC 2019 PHYSICS PRACTICAL SOLUTION We are here to offer you latest answers on WAEC   PHYSICS PRACTICAL . In other to Get our 100% answers for WAEC 2019. PYHSICS PRACTICAL    You have to subscribe for it following the Procedure bellow. CLICK HERE TO CHAT WITH ADMIN ON WHATSAPP SEND Text ONLY: 07011678965 (PLS CONTACT FOR IMPORTANT ENQUIRES) POWERED BY EXAMKING DITTO  CLICK HERE TO CHAT WITH ADMIN ON  WHATSAPP PHYSICS PRACTICAL SOLUTION BY EXAMKING DITTO  ================================================================================== KEEP REFRESHING EVERY 5MINUTES............. ================================================================================== (1aviii)  In a tabular form  Under y(cm) 20.0, 30.0, 40.0, 50.0, 60.0 Under t(s) 36.61, 33.66, 31.32, 28.62, 25.93 Under T = t/20(s) 1.8305, 1.6830, 1.5660, 1.4310, 1.2965 Under T²(s²) 3....
Read more