Example 9.2 | Chapter 9 | Light Reflection and Refraction | Class 10 Science | NCERT

In this session, I will continue with the light chapter of class 10.

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#class10science #LightReflectionandRefraction #learnwithmansi

[avakinneha]

some people are confused in the comments section so let me explain.

you just have to compare wether magnification (m) is greater than 1 or not. If m is greater than 1 then hi is greater then ho. Also for those who have confusion in the part where magnification is in minus, let's take an example:-

Suppose the magnification that we get is -3.0 or -2
Is it greater then 1 or small than 1 ?
People often get confused and make a mistake that this sort of magnification is smaller than 1 because it's in minus. but that's not true.
It doesn't matter what sign magnification has wether it's positive or negative, if the number in magnification is greater than 1 then m>1
So even if m = -3.0 or -2 it's still greater than 1. Hence hi>ho

Now for those of you wondering how this is possible, it's because the positive and negative sign in the magnification is simply there to symbolise the nature of the image height (wether it's inverted or erect) the positive and negative sign has nothing to do with the actual value of magnification.

5:11 video ke is part part mam ne galti se bola ki "number par mat jaana, sign minus he". I think what she meant to say is that "sign pe mat jaana, number bada he"

[Arshpreet_kaur]

Ma'am size enlarged ha minus sign of convention & inverted image ka karn ha
Or maam vasa bhi agr humari f=15 tha matlab c=30 and humara v aya 37.5 means beyond c & beyond c image humesha enlarged hoti ha 🙂

[kabindarprasad]

Ma'am last part
Size of image is enlarged not diminished
You're the beat teacher ever ❤❤

[EkamJammu-mmgg]

Mam considered the negative sign for size but we should observe the magnification.
As 1<m
then the image will be englarged

[kaushalyadevi]

Ma'am I think the solution is little wrong because, Hi mostly negative hota hai because wo inverted hai means third quadrant me hai!! So it will be negative and the image will be enlarged as hi>ho !! (I am also little confused in that?)

[DheerajKumar-ylst]

Ma'am image is enlarged because magnification is more than 1.

[coffeewithsane]

Ma'am has made a mistake.. The image formed is enlarge and not diminished..😊

[dramaworld]

Madam in the textbook it says the image is enlarged..??

[AMARTO_GaMeRz]

You are the best teacher on youtube platform 💜😊😘

[KulsoomFatima-nm]

Mam image will be enlarged not diminished

[rishabgmeryt]

You are the best teacher on YouTube platform🥰 i am watching your videos form 5th class we love you the most❤️

[arvinddubey]

Thanks mam because your explanation is best

[preiyanshkumar]

Madam Image Diminished nhi enlarged hogi

[kailashnirmalkumarjain]

5:23 book mai size enlarged given h... Diminished nahi

[gungunchoudhary]

Ma'am image will be enlarged not diminished

[anamanam]

Mam size of image is enlarged not diminished.

[SaurabhTiwari-bufe]

Mam sure h aap diminished hoga....ya fir enlarged😊

[ProAs.]

Mam cross multiplication b honi thi or 3 khase aya

[LUCKY-ikxo]

Mam phle magnification nikal kr phir h' ki value nikal skte the

[amitdahiya]

Mam in book solution is inverted and enlarged.