100 % Solution to NECO June 2024 Practical Physics (complete package: a must watch)

[@Lordify_Concepts]

Thanks so much for taking your time at night to do it

[@bestsciencebrain]

We appreciate

[@UchechukwuEzenwadike-kw4zu]

Thanks so much sir ❤ May God bless you 🙏🙏

[@bestsciencebrain]

We appreciate

[@abdulkarimmusa7895]

I wish you all the best. You save all 🙏

[@bestsciencebrain]

We appreciate

[@footballcringe_YTB]

Thank you sir,buy please try and be raising your camera up while doing the video,so that we can have a clear view of it.

[@bestsciencebrain]

Ok

[@gbaghanfaith9801]

Thank you very much sir

[@bestsciencebrain]

You are welcome

[@jamesdavid-qk7fr]

Hmmmm cant wait to comeback nd testify 😊😊

[@bestsciencebrain]

Smiles

[@samsonolabode66]

Good job sir more knowledge. Please for optics i we going to summit the white paper

[@debbora980]

Yes we would

[@bestsciencebrain]

Yes you will. For optics, screen my KZbin videos, there are three videos I provided for NECO examination on rectangular glass block titled model 1, 2 and 3. One of them is most similar to what you have

[@AffectionateBluebonnetFl-mu7zy]

thank you so much sir God bless you

[@bestsciencebrain]

We appreciate

[@isaacking1917]

We are grateful

[@bestsciencebrain]

We appreciate

[@MarvelousJames-d1v]

No sir I am talking about physics not chemistry

[@bestsciencebrain]

Ok

[@MarvelousJames-d1v]

@@bestsciencebrain ok sir so what about my question

[@MarvelousJames-d1v]

My question was. what if the range in which our teacher fill in their report form is different from mine or my values in the table is higher or lower than his range or is it that the range of the value is not part of what the teacher will fill in the report form?

[@bestsciencebrain]

Ok. Teachers don't submit values or range of values to WAEC or NECO in physics practicals unlike chemistry, where they submit end point. Let no person make you frightened. Physics practicals are marked with respect to expected variations. That is whether your values are increasing or decreasing uniformly as expected. This means that no set of values is taken as the standard marking scheme but how correct are your values to what is expected. If your teacher tells you that he submitted values to WAEC or NECO, tell him I said it is a white lie.

[@MarvelousJames-d1v]

@@bestsciencebrain thank you sir for releasing me from thinking too much. I so much appreciate

[@MarvelousJames-d1v]

Please sir i am worried because I used your readings to plot my graph and my fellow class mates use a reading that is different from mine but our graph has the same structure and we got the same value for the slope in number three, please sir hope no problem if the table varies??

[@bestsciencebrain]

You are 100% right. Nothing to worry about. This is not a school examination. Almost all students using the same reading may even jeopardize their results. The most important thing is that your readings are in line with what is expected.

[@ishanoir5367]

Good job sir, please for the force board practical are we submitting the white paper

[@AffectionateBluebonnetFl-mu7zy]

yes

[@bestsciencebrain]

No. There is no instructions to submit any paper. However, you are expected to do that in number 2 (rectangular glass block)

[@IsraelWalterCosmas]

Thank you sir

[@bestsciencebrain]

You are welcome

[@MAX_TV99]

Thank you so much Sir ❤❤✅

[@bestsciencebrain]

You are welcome

[@JoyOladosu]

Thankyou so much sir

[@bestsciencebrain]

We appreciate

[@ejiroakinduro]

Sir how did you get the voltmeter V(v) 10.00= 1.500 and the rest

[@heavensgate3347]

Same question I wanted to ask

[@bestsciencebrain]

Read off from the instrument

[@MarvelousJames-d1v]

But sir what if the range of the value that our teacher fill in their report form is lower than mine? Or is it that the teacher is not the one to fill the range that all the values of the students should fall into?.

[@bestsciencebrain]

Your Teacher is the one that would fill the report form that would be packaged with your scripts and used by the examiner (marker) to judge all the students in your school. So your end point " VA " must agree with your teacher's own. If your teacher was not in school the examination day then he must have given the values to a colleague to fill for him. In a situation where the teacher forgets to include the report form, then the examiner (marker) must go through the whole scripts in your school and choose the average of the most random "VA " as the end point to judge all the students in a given school. Now see how it is marked: If your teacher's end point (VA) is 20.30 cm3 Then a student's whose VA is 20.30 + or - 0.10 cm3 scores maximum 8 marks on the table. That is a student whose VA is 20.20 or 20.30 or 20.40. A student whose VA is 20.30 + or - 0.20 cm3 (ie 20.10 or 20.50) scores 6 marks on the table A student whose VA is 20.30 + or - 0.30 cm3 (20.00 or 20.60) scores 4 marks A student whose VA lies 20.30 + or - 0.40 (19.90 or 20.70) scores 2 marks A student whose VA lies 20.30 + or - 0.50 (19.80 or 20.80) scores only 1 mark Any student whose VA lies outside the above mentioned limits ie from 0.60 of the teacher's end point scores zero on the table. Whether you scored maximum 8 marks on the table or zero does not affect your marks on the calculations that follow provided you used the right steps and formula to solve accurately. You guys have been advised over and over again to subscribe to the channel, turn your notification button on and be vigilant and not to start having regrets after the examination. You can never see our videos or post unless you have subscribed and have your notification button turned on. Then tune to the channel as from 10 pm to 11 midnight before the exam date.

[@MarvelousJames-d1v]

@@bestsciencebrain no sir I mean in physics

[@gideonchiagozie-i5v]

How did you get the values of theater

[@bestsciencebrain]

Measure with a protractor after the experiment

[@SmilingFieldHockey-em7rm]

Did u carry out the eperiment or used formula

[@bestsciencebrain]

Done practically

[@SmilingFieldHockey-em7rm]

How did you get the pd od 1.03 from voltmeter

[@bestsciencebrain]

Sensitivity of the voltmeter you are using differs. There are different types.

[@gbihisaa-aondo]

Thanks a lot 🙏

[@bestsciencebrain]

We appreciate

[@DoguboTubokeyi]

Sir please in this 1st question, I'll love to know how we got the figures of the cos sine

[@AffectionateBluebonnetFl-mu7zy]

when you conduct the practical

[@bestsciencebrain]

Measure the angles with your protractor. Thanks

[@ejiroakinduro]

Sir how did you get your voltmeter V(v) which is 10.00=1.500

[@bestsciencebrain]

Read off from the instrument. Thanks

[@Totally-TUFF]

Thank you alot sir. I have a question the white paper for the mechnics are we going to submit it

[@bestsciencebrain]

No. It was not stated

[@Totally-TUFF]

@@bestsciencebrain thanks what of the optics is there ea chance we will need tot submit it

[@PromiseOdumegwu]

You have to attach the paper you sloved it in

[@AyomideOlutayo]

Thank u sir But isn't the voltage V meant to increase as the length increases

[@faithfulfaith-du1jb]

No V is supposed To decrease

[@bestsciencebrain]

No, as the length increases, V decreases. Had it been we were asked to plot V against L, we would have gotten a negative graph and slope. To correct this anomaly, we were asked to find the inverse of V and plot it against L and this gave us an intercept C on the vertical axis which would be the E.M.F of the cell used. The connection of the standard resistor and the Constantan wire is in series. Don't swallow most of the manipulations you see on the you tube as being correct because most of them are wrong. Had it been that the connection between the Constantan wire and the standard resistor is in parallel, then the voltage would have have increased as the length increases provided the voltmeter is connected across both the resistor and the wire. Hope this explanation clarifies your fears. Thanks for your comment

[@timilehinoyinlola7168]

Sir, i thought V increases as L increases

[@bestsciencebrain]

In this case, No. I have answered this. Kindly screen the comments for this type of question and the replies. Thanks

[@EdidiongBeatrix]

Please explain the second angle and how to get it on the paper to be submitted

[@bestsciencebrain]

No traces to be submitted for this number

[@MAX_TV99]

Sir pls how did you get ur values for V🙏🏽

[@bestsciencebrain]

Voltmeter readings

[@Shikkybaeebi]

Sir pls can just explain how get the v(v)

[@bestsciencebrain]

Read off from the voltmeter

[@JoanBarde-to7wd]

Thanks

[@bestsciencebrain]

We appreciate

[@musabulus1311]

Thanks so much sir

[@bestsciencebrain]

Thanks we appreciate

[@obasiPresident]

Thanks 😊

[@bestsciencebrain]

You are welcome

[@SamuelKayode-k5r]

Sir plz how do i get angle aoq

[@bestsciencebrain]

Kindly measure with a protractor after the experiment. Thanks

[@SamuelKayode-k5r]

@@bestsciencebrain sir is dat the only way to find it

[@Afolabiprecious-c3y]

Thank you so muchhhhhh

[@bestsciencebrain]

You are welcome

[@EdidiongBeatrix]

Does the angle decrease or increase with increase of force

[@enejetemple2007]

It creases 😅😂

[@bestsciencebrain]

Definitely, it must increase. As you add more forces, the ropes under AB draw lower, increasing the angles. Thanks

[@Blessy016]

Please when should we expect optics question

[@bestsciencebrain]

Two questions are enough for the exam

[@AfolabiTaiwo-vz4mg]

V is supposed to be increasing with increase in length naw

[@bestsciencebrain]

Who told you that. Stop making fictitious comments based on copying from KZbinrs or past questions. Use your own data, find the inverse of V and plot against L and see the shape of graph you are going to have. How was the resistor and Constantan wire connected and where was the voltmeter connected. Go to previous comments and replies. You guys go to you tubers and copy manipulations without verifying whether it is right or wrong.

[@NdubuisiBeneth]

Please is these the final results

[@bestsciencebrain]

Sure

[@hanatoloto3832]

So pls what is the internal resistance now cause i know it is btw 0.5 and 1

[@bestsciencebrain]

Internal resistance of dry cells can vary considerably depending on the chemical constituents of the cell. It can be far higher than the range you specified, which you must have just goggled online. Dry cells are primary cells, supply lower current and are expected to have higher internal resistance. Unless you are talking about an accumulator, which is a secondary cell. Thanks

[@MarvelousJames-d1v]

Sir you have not answered my question

[@bestsciencebrain]

Remind us your question please

[@PromiseOdumegwu]

How did you get the angle

[@bestsciencebrain]

Follow the instructions, do the experiment and measure with a protractor. Put the mid point of the protractor between the two lines, read off the angles and take the difference

[@HappyHappy-el1mt]

Sir is the value for slope supposed to have unit?

[@bestsciencebrain]

In this case yes

[@dripeprime8348]

W mans frs

[@bestsciencebrain]

W is a constant mass used in the experiment and it is equal to 30 g

[@EdidiongBeatrix]

Please can I use your values for the practical or it most be the same with other people's own

[@bestsciencebrain]

The values are ok, verified and correct. Readings can still differ but the similar variations or shapes of graphs are expected.

[@EdidiongBeatrix]

​@@bestsciencebrainthanks sir Please do you know values neco is using

[@SmilingFieldHockey-em7rm]

Did you use acummulTor or dry cell?

[@SmilingFieldHockey-em7rm]

How can 2V accumulator produce similar reading with 3V dry cell

[@PreciousArungwa]

Thank you sir But please,must everyone answer same question? I mean what if others are writing maybe questions 2&3,can I still answer question 1?

[@IsraelWalterCosmas]

You just sabed my practical 🥲

[@bestsciencebrain]

Thanks

[@TempleChidubem]

Thanks sir

[@bestsciencebrain]

You are welcome

[@IfeyinwaChima-h4t]

Pls next time ,raise the camera

[@bestsciencebrain]

Okay. We apologize for that. Take the values, plot the graph, listen to the video. You will definitely get the same result. Thanks

[@SaintZero-e4y]

U didn't solve 1a ii

[@bestsciencebrain]

Ok

[@tundeadeleye1000]

Sir must our slope be almost the same thing

[@bestsciencebrain]

No

[@SmartChukwu]

How true is this

[@hopenduka-pd2ji]

It's legit bro, I've checked

[@ishanoir5367]

​@@hopenduka-pd2ji so the answer is correct?

[@bestsciencebrain]

🏆

[@SmilingFieldHockey-em7rm]

Did u use two dry cell or?

[@AffectionateBluebonnetFl-mu7zy]

yes

[@bestsciencebrain]

Watch the video and listen to the podcast. Yes, we did. You can still use a freshly charged accumulator of 2 V, however the readings would differ but the variations and shape of graph will be the same. The instructions says use two dry cells of EMF 1.5 V each or an accumulator

[@DoguboTubokeyi]

Sir please i dont understand how we got the intercept. Do you mind explaining to me sir? Thanks sir

[@MAX_TV99]

When you plot a graph and let’s say it’s a straight line graph After drawing your straight line to connect the points on your graph sheet.....extend the line so it can cut across the vertical axis of your graph and check the point in your vertical axis where the line passed through That’s ur intercept

[@bestsciencebrain]

Read the reply above

[@NikeAbiodun-z7y]

Pls sir can i use this exact values during the exam

[@KehindeAdenola-bn5mv]

Sir can we

[@bestsciencebrain]

Sure you can

[@JeremiahGoddey-qn9cw]

Sir are we to submit the A4 paper

[@AffectionateBluebonnetFl-mu7zy]

yes

[@bestsciencebrain]

No. Unless you wish to. It was not stated that you should

[@JeremiahGoddey-qn9cw]

Tnx sirr the question was the same

[@TojolaOlumuyiwa]

Is this today question for physics practical

[@AnthonyOnyiaodike]

Yes

[@bestsciencebrain]

I don't know

[@YoungKid-wc9xv]

So why writing 100%​@@bestsciencebrain

[@YoungKid-wc9xv]

Is this the main question

[@bestsciencebrain]

Because it is 100%. Do you expect us to answer all comments!!

[@HenryObeta-p9d]

Sir hope is sure 😢

[@bestsciencebrain]

You should know by now

[@AmakaObinwa-xt7ml]

Tanx

[@bestsciencebrain]

Ok. Perhaps we are using French

[@TojolaOlumuyiwa]

Is this today question

[@GodsTreasureAziegbemhin-xq9gy]

Yes

[@olaitanadeyemi-samuel4519]

Yes

[@bestsciencebrain]

We don't know

[@DominionNwajei]

Thanks So much 🙏🏻🙏🏻

[@bestsciencebrain]

You are welcome

[@gideonchiagozie-i5v]

How did you get the values of theater

[@bestsciencebrain]

Measure the angles with a protractor after doing the experiment

[@TojolaOlumuyiwa]

Is this today question for physics practical

[@MAX_TV99]

Yes

[@bestsciencebrain]

I don't know

[@shallmen01]

Thank you so much sir 😊

[@bestsciencebrain]

You are welcome