Physics Quiz | 25 Important Questions and Answers | Science GK Quiz | Competitive Exam Preparation

[@IjaboyodeSoji]

I have got 11 points, Thanks for your acknowledge

[@prudhviraj4610]

But very important physic questions sir

[@LNT]

Most welcome 😁

[@architswain6597]

It was very useful in IGKO Exam, I am from Airson English School in Badlapur, INDIA 👍👍👍👍👍

[@mdioxd9200]

2:33 Centrifugal force may stop applying, but the part of the force due to gravity doesn't change. My weight doesn't change when I am carried by an elevator, since my mass stays the same, acceleration caused by gravity doesn't change when other forces apply, only the net force does.

[@ayusingh3561]

Your weight does change in an elevator, mass and weight aren't the same thing The apparent weight in a lift is vectorial sum of of ma and mg where a is acceleration due to lift and g is earth's gravitational field Also due to earth's rotation the centrifugal force in non inertial rotational frame causes our weight to decrease slightly this apparent change is due to change in value of g, where g(apparent)=g-Rw²cos(y) where g=9.8m/s², R=radius of earth, w= angular speed of earth and y=latitude since y at equator=0, cos(y)=1 and g(apparent)=g-Rw² when the earth stops rotating w becomes zero and g(apparent)=g which is greater than g-Rw², therefore the value of g increases and so does the weight, which can simply be defined as product of mass×g in accordance with newton's laws

[@tasmia3550]

I surely recommend you to add like this vedios #really helpful 👍😊

[@LNT]

So nice of you 😁😁

[@moorthycisf]

yeah this is interesting fun fact : how to find whether a quantity is a scalar or a vector a vector * vector = a vector quantity a scalar * scalar = scalar quantitiy a vector* scalar = vector we can see that force formula is mass * acceleration so we can basically see that using basics we know that acceleration is a vector quantity so it is basically a vector quantity

[@bholanathsaha1161]

Except Work it is a product of two vector quantities

[@alpha7742]

@@bholanathsaha1161 cuz it's a scalar product

[@ahadmustaqeem2266]

No dude there exist dot product as well vector*vector= scalar like in kinetic energy velocity squared is a dot product there

[@shabbirshaik7496]

yah its amazing questions yar this youtube channel is very useful to us ra

[@deekshith7917]

I got 22/25 Tq so much 👍👍

[@Alic_alder]

Thanks for giving us these knowledge❤

[@moorthycisf]

newton's third law states that every action has an equal and an opposite reaction relative density is density of substance / density of water and we get to see that density of water is nothing but the formula of density is mass / volume so density of substance also = mass / volume we get to see that everything gets cancelled and thus it has no unit unlike the normal density which has unit as kgm^3 obviously we know 3 forms of matter exist which are solids liquids and gases and if there is something correct as the fourth state of matter it could only be plasma . buoyancy obviously cuz we know that force buoyant = density * volume * gravity which is 9.8 m/s or 10m/s . in pascal's law i think so it states that if a pressure s put on one part of the object it also is same in the other end obviously we know that sound cannot travel in vaccum pressure is increased with depth

[@viggosav6316]

Okay

[@kishorebabu5543]

25/25 bro very easy. Always thankful for this channel ❤

[@seemabadhani4542]

Chup Jhute,jhut bol raha hai sala

[@amritdeepbhakna6434]

Thanku sir awesome class😊

[@Know10th]

I got all 25🎉🎉

[@shabbirshaik7496]

suprlyy teached yarr u are the great person yarr

[@shabbirshaik7496]

yeah yarr nice yarr well done ra

[@rishipramanick6823]

One thing is the propulsion of rocket is based on second law of motion where it states that if f is proportional to momentum then if u differentiate f wrt t then u get f = vdm/dt + mdv/dt mass of fuel is not constant in expulsion of rocket then f= vdm/dt and hence rocket propulsion is based on 2nd law of motion

[@rao_krishu]

I had got 21/25 😊

[@pankajsiddhu5787]

17/25 is correct

[@m.praveenm.pradeep6792]

I've got 18 points. It's amazing

[@Avadhanivln]

Question are easy for class X . Some body who got 22 from standard viii must be good at studies

[@muhammafhamza1860]

"Bequeral" is the unit of radioactivity. Curie is not the unit.

[@kanna-chan6680]

Both units are valid

[@leviackermanoooiii]

There are si and cgs units

[@NOMAN-KHAN...234]

Curie is also a unit of radioactivity

[@VinuthaR-tq9tq]

I am from grade 8 and I got 21

[@TechwithMC]

25/25 🎉🎉❤❤ 9th class

[@yusufdalal9691]

Infinitty

[@RuthIhekanwa]

Thanks to you sir 👍❤❤❤

[@competitionpage363]

My score 19/25🙂

[@GNBSolada]

24/25 correct,😃

[@sabeelasabi3141]

😮

[@akhilsyed12]

MY ALL ANSWER ARE CORRECT

[@victorkumar3433]

I have got 20/25

[@rupanjalipradhan1231]

2: potential energy because stored energy in the spring

[@saimothi6940]

Thanks sir

[@preethikswamy9012]

Ths qstn was asked in recent nata phase 2 ppr

[@catesigo.8613]

elastic potential energy

[@rishipramanick6823]

If the spring is extended then released then kinetic energy will also be indulged hence this question needs more clarity either being a resting spring or extended spring

[@Edison-newworldBlogspot]

18/25 - I able to answer correctly!!!

[@LNT]

Super 👏👏👏

[@kaustavchakraborty5192]

I got all correct

[@LNT]

Excellent 👏

[@kaustavchakraborty5192]

@@LNT 😎

[@1264Ronny]

I got 22 correctly

[@LNT]

Awesome 👏👏👏

[@1264Ronny]

@@LNT thanks 🇮🇳

[@yusufdalal9691]

Sonar

[@Pvt625]

I got 22 correct.😊

[@dkgaming6265]

Iam studying in 8 th standard I got 21/25

[@allinone-f6o]

Who gives u a phone😀😃😃

[@zoolykommu5603]

Good u got 21 /25

[@bharathgaming592]

I am also 8 th but i got 24/25 🎉🎉 It is bcuz I am topper

[@allinone-f6o]

@@bharathgaming592 go and say to ur mom and take a 🍫🍫🍫

[@arjunpenikalapati9264]

So what

[@yusufdalal9691]

Plasma

[@ArashDeepGAMING]

Option a.

[@shortsbykrishna.v4400]

22 out of 25

[@rajnishkushx]

Vacuum is correct

[@tysonwu6312]

Why? 2:37 I don’t understand, should the acceleration DUE to g be constant?

[@DooshimaAminde-yd7hy]

I also got 17/25.

[@ishugirl7923]

16 correct

[@yusufdalal9691]

Equinox

[@bulumohanty9605]

Radar

[@bulumohanty9605]

Third

[@yusufdalal9691]

Refraction

[@yaf9958]

I got all of it

[@Big_mojo]

Liar

[@sharminakp36]

25/25 marks lgot it l studiying 8std GHSS puzhathi

[@yusufdalal9691]

Radiation

[@rocketlaunchers9896]

I'm in 7th class i got 23/25

[@rocketlaunchers9896]

You are excellent

[@anuraganand3612]

I got 17 I am in 6th standard

[@amangautam105]

18

[@jamsheda100]

I got 22 out of 25

[@rocketlaunchers9896]

I'm in 7th class

[@PushpaBeri-i7x]

I got 24

[@bulumohanty9605]

Convection

[@ZindagiKelseyKi]

1:20 2:35

[@Thehunter-c8g]

I study this questions in 5th class

[@yusufdalal9691]

Tadioactivity

[@ghh712]

24/25. I didn't know that acc'n due to gravity would change if the Earth stopped rotating.

[@AmithAmith-ku5ng]

B

[@SoniSingh-rh8ty]

I came first in my school in birds with 99%

[@bulumohanty9605]

Graphite

[@proseonthepage5812]

I can’t believe I’m watching this for entertainment

[@yusufdalal9691]

Solar

[@yusufdalal9691]

Water

[@vsrinu5191]

Sir please share classes in Bipc Eamcet

[@LNT]

Sure 😊

[@malikaminsajid3879]

Good video

[@anjalinimmakayala4475]

Tq sir

[@yusufdalal9691]

Rectifier

[@SaritaRai-tm9ph]

Please play in live also

[@ArashDeepGAMING]

Option c

[@santriptifood9183]

12

[@tpmglospel8310]

25 correct

[@yusufdalal9691]

Newton law

[@reetasharma9523]

2-d

[@BubaDas-m5q]

20/25 7th grade

[@mrbeast9025]

25/25

[@LNT]

Excellent 👏👏👏

[@bulumohanty9605]

9.8km/s

[@sankhayanbhaumik6452]

Very nice Sir......

[@LNT]

Thank you 😁😁

[@yusufdalal9691]

Force

[@yusufdalal9691]

60uz

[@bulumohanty9605]

Decreased

[@rupalinaik1545]

I am studying in 2nd STD And I got 20/25

[@sindhudone5415]

Decibel

[@ArashDeepGAMING]

Option b

[@johnpeter3989]

what is this polarised mean

[@luckynath07]

9.8km

[@kanan2144]

21/25

[@LNT]

Very good 👏👏👏

[@bholanathsaha1161]

23

[@publiccomment8524]

Please dont read the answer a, b, c, d it feel bore,just read the right answer.

[@Faizankhan01786]

23 right

[@sindhudone5415]

Infinity

[@sindhudone5415]

Radioactivity

[@yusufdalal9691]

Couloumb

[@Underestimated-1]

It's very simple question 😂

[@jyothimaddipati6916]

A force

[@sindhudone5415]

Total internal refraction

[@ArashDeepGAMING]

Option d