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

In this video, 25 important questions from Physics are included.
Which one of the following is a vector quantity?
What type of energy is stored in the spring of a watch?
The working of a rocket is based on which Newton's law of motion?
What is the rotational analogue of mass in linear motion?
What is the minimum escape velocity of a rocket to be launched from Earth to space?
What is Young's modulus of a perfectly rigid body?
The value of acceleration due to gravity at the equator will ______ when the Earth stops rotating.
Which of the following is a good conductor of electricity?
What is the principle of Fibre optical communication?
What is the frequency of direct current?
"Curie" is a unit of?
What is the unit of relative density?
Which of the below waves cannot be polarised?
What is the fourth state of matter?
Which is the force that causes objects to float?
Which of the below is used to locate submerged objects?
Which device is used for converting alternating current (AC) to direct current (DC)?
Which of the below is a measure of sound level?
Acceleration is inversely proportional to?
What is the principle behind hydraulic brakes used in automobiles?
Sound cannot travel through?
How does the heat from the Sun reach Earth?
What is it called when the Sun is exactly over the Earth's equator?
The surface tension of a liquid decreases when its temperature is?
Which of the below is a non-renewable energy source?

[@prudhviraj4610]

But very important physic questions sir

[@LNT]

Most welcome 😁

[@IjaboyodeSoji]

I have got 11 points, Thanks for your acknowledge

[@architswain6597]

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

[@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

[@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

[@Know10th]

I got all 25🎉🎉

[@kishorebabu5543]

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

[@seemabadhani4542]

Chup Jhute,jhut bol raha hai sala

[@deekshith7917]

I got 22/25 Tq so much 👍👍

[@Alic_alder]

Thanks for giving us these knowledge❤

[@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

[@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

[@amritdeepbhakna6434]

Thanku sir awesome class😊

[@shabbirshaik7496]

yeah yarr nice yarr well done ra

[@rao_krishu]

I had got 21/25 😊

[@m.praveenm.pradeep6792]

I've got 18 points. It's amazing

[@shabbirshaik7496]

suprlyy teached yarr u are the great person yarr

[@pankajsiddhu5787]

17/25 is correct

[@GNBSolada]

24/25 correct,😃

[@sabeelasabi3141]

😮

[@TechwithMC]

25/25 🎉🎉❤❤ 9th class

[@Avadhanivln]

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

[@rocketlaunchers9896]

I'm in 7th class

[@RuthIhekanwa]

Thanks to you sir 👍❤❤❤

[@competitionpage363]

My score 19/25🙂

[@1264Ronny]

I got 22 correctly

[@LNT]

Awesome 👏👏👏

[@1264Ronny]

@@LNT thanks 🇮🇳

[@Edison-newworldBlogspot]

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

[@LNT]

Super 👏👏👏

[@yusufdalal9691]

Refraction

[@yusufdalal9691]

Infinitty

[@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

[@Pvt625]

I got 22 correct.😊

[@kaustavchakraborty5192]

I got all correct

[@LNT]

Excellent 👏

[@kaustavchakraborty5192]

@@LNT 😎

[@victorkumar3433]

I have got 20/25

[@yusufdalal9691]

Sonar

[@rocketlaunchers9896]

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

[@rocketlaunchers9896]

You are excellent

[@yusufdalal9691]

Plasma

[@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

[@VinuthaR-tq9tq]

I am from grade 8 and I got 21

[@rajnishkushx]

Vacuum is correct

[@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

[@bulumohanty9605]

Radar

[@yusufdalal9691]

Equinox

[@shortsbykrishna.v4400]

22 out of 25

[@DooshimaAminde-yd7hy]

I also got 17/25.

[@yaf9958]

I got all of it

[@Big_mojo]

Liar

[@bulumohanty9605]

Third

[@amangautam105]

18

[@sankhayanbhaumik6452]

Very nice Sir......

[@LNT]

Thank you 😁😁

[@malikaminsajid3879]

Good video

[@yusufdalal9691]

Radiation

[@AmithAmith-ku5ng]

B

[@akhilsyed12]

MY ALL ANSWER ARE CORRECT

[@ArashDeepGAMING]

Option a.

[@yusufdalal9691]

Tadioactivity

[@bulumohanty9605]

Graphite

[@bulumohanty9605]

Convection

[@anjalinimmakayala4475]

Tq sir

[@jamsheda100]

I got 22 out of 25

[@SaritaRai-tm9ph]

Please play in live also

[@anuraganand3612]

I got 17 I am in 6th standard

[@proseonthepage5812]

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

[@ishugirl7923]

16 correct

[@yusufdalal9691]

Solar

[@tysonwu6312]

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

[@sharminakp36]

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

[@bulumohanty9605]

9.8km/s

[@yusufdalal9691]

Water

[@yusufdalal9691]

Rectifier

[@vsrinu5191]

Sir please share classes in Bipc Eamcet

[@LNT]

Sure 😊

[@PushpaBeri-i7x]

I got 24

[@bulumohanty9605]

Decreased

[@yusufdalal9691]

Newton law

[@yusufdalal9691]

60uz

[@mrbeast9025]

25/25

[@LNT]

Excellent 👏👏👏

[@ZindagiKelseyKi]

1:20 2:35

[@yusufdalal9691]

Force

[@publiccomment8524]

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

[@santriptifood9183]

12

[@SoniSingh-rh8ty]

I came first in my school in birds with 99%

[@reetasharma9523]

2-d

[@yusufdalal9691]

Increase

[@kanan2144]

21/25

[@LNT]

Very good 👏👏👏

[@yusufdalal9691]

Kg m2

[@glorylazrus]

20/25.. ☺️🌼

[@pubgprosreview3426]

Hi contact me plzzz

[@bholanathsaha1161]

23

[@ArashDeepGAMING]

Option c

[@ghh712]

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

[@BubaDas-m5q]

20/25 7th grade

[@Thehunter-c8g]

I study this questions in 5th class

[@AmithAmith-ku5ng]

D

[@yusufdalal9691]

Kinetic. Energy

[@tpmglospel8310]

25 correct

[@yusufdalal9691]

11.2 mm.s

[@Underestimated-1]

It's very simple question 😂

[@Faizankhan01786]

23 right

[@swarasoni5514]

Nice

[@BhumikaChhablani-z9z]

Only 15 questions correctly answered 😢😢

[@ArashDeepGAMING]

Option b

[@sindhudone5415]

Radioactivity

[@chandrakumar9750]

The model question paper in scientific assistant for ssc exam🙏🙏🙏🙏