CBSE > Class 11 > Physics | CBSE Board | Homework Help

The Heisenberg Uncertainty Principle states that we cannot determine the position and momentum of a microscopic particle simultaneously which means that if Momentum is certain then the position becomes uncertain and if the position is certain then the momentum becomes uncertain... The product of the uncertainty in momentum and position is always less than or equal to h/4π.

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Sir in class xii next year 2020 board students syllabus will come full or half.

Posted by Anshil Gupta Xii 7 years, 2 months ago

CBSE > Class 11 > Physics

2 answers

Priya Dharshini ☺☺ 7 years, 2 months ago

New textbooks will be for next year ?

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Christin Mathew 7 years, 2 months ago

Dear student anshil Next year the syllabus will be reduced by 20%each subject. So that Ray optics in physics and some chapters of chemistry is added this year. No novel will be there for next year in core syllabus. Further, text books are reprinting. Discussion are going on........

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Aapka physics chem aur maths ka kitna syllabus ho gaya??

Posted by Komal Mehta 7 years, 2 months ago

CBSE > Class 11 > Physics

6 answers

King Sehar 7 years, 2 months ago

Abhi to half yearly chal rahe..

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Christin Mathew 7 years, 2 months ago

Yeah

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Komal Mehta 7 years, 2 months ago

Maths 10 chapters over

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Komal Mehta 7 years, 2 months ago

Physics thermal properties of matter start kiya h chem organic Chemistry start kiya h

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Christin Mathew 7 years, 2 months ago

Yours?

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Christin Mathew 7 years, 2 months ago

Physics :mechanical property of fluid Chemistry :6 chapter Maths 10 chapter over

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Explain Bernoulli's theorem

Posted by Komal Mehta 7 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

In droplets combine to join a big drop then show that the rise in temperature

Posted by Rv Sharma 7 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Ray diagrams of mirror and lens

Posted by Vaibhav Gupta 7 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Three rods of the same mass are placed as shown in the figure.calculate the coordinates of the centre of mass of the system

Posted by Anu Priyankha 7 years, 2 months ago

CBSE > Class 11 > Physics

2 answers

Christin Mathew 7 years, 2 months ago

Figure ????

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Aditya Wagh 7 years, 2 months ago

But where is the figure

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Kitna practical hua h avi tak or kon kon sa physics me?????

Posted by Akash Choudhary Dav Gandhinagar 7 years, 2 months ago

CBSE > Class 11 > Physics

3 answers

Akash Choudhary Dav Gandhinagar 7 years, 2 months ago

Kare english me type boka h kya

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Isha Bhardwaj 7 years, 2 months ago

Bhai mai khud confused hu ....??

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Christin Mathew 7 years, 2 months ago

Type in English please

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What is action of point

Posted by Sooraz Sah 7 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

How to study physics for jee advanced How to memories formulas confused with all Can anyone suggest me how to prepare

Posted by Vaishnavi Kalvakuntla 7 years, 2 months ago

CBSE > Class 11 > Physics

4 answers

Priya Dharshini ☺☺ 7 years, 2 months ago

Make some short cuts of ur own and try to understand it .sometimes try to derive the formulas ur self then it will be very easy for u to byheart the formulas all the best for ur exam

1Thank You

Christin Mathew 7 years, 2 months ago

Study with confidence. Wishing you all the best for the preparations for jee. Just by heart all the equation. You could prepare an equation book. You could download short notes

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Aman Kumar 7 years, 2 months ago

Nothing...., just recite each N every formula on every morning like a song... U will gona top In mains and advanced ??

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Vimal Pathak 7 years, 2 months ago

Jee main ho gya kya

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Compare the weight of a body when it is 100km above the surface of earth & 100km below the surface of earth

Posted by Trilok Soni 7 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Aman Kumar 7 years, 2 months ago

I think weight will same.... Not sure

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what do you understand by uniform circular motion.Establish relation between linear and angular velocity and conclude centripetal acceleration

Posted by Kundan Bhushan 7 years, 2 months ago

CBSE > Class 11 > Physics

5 answers

Isha Bhardwaj 7 years, 2 months ago

Thanks aman?

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Aman Kumar 7 years, 2 months ago

Ishu

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Aman Kumar 7 years, 2 months ago

Good one...

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Isha Bhardwaj 7 years, 2 months ago

Relation between v and w... * V = wr

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Isha Bhardwaj 7 years, 2 months ago

When a body moves in a circular path with uniform speed , then its motion is called uniform circular motion.....

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Explain the applications of Bernoulli's theorem

Posted by Komal Mehta 7 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 7 years, 2 months ago

i) Lift of an aircraft wing: A section of an aircraft wing and the flow lines are shown in Fig. The orientation of the wing relative to the flow direction causes the flow lines to crowd together above the wing. This corresponds to increased velocity in this region and hence the pressure is reduced. But below the wing, the pressure is nearly equal to the atmospheric pressure. As a result of this, the upward force on the underside of the wing is greater than the downward force on the topside. Thus there is a net upward force or lift.
(ii) Blowing of roofs: During a storm, the roofs of huts or tinned roofs are blown off without any damage to other parts of the hut. The blowing wind creates a low pressure P1 on top of the roof. The pressure P2 under the roof is however greater than P1. Due to this pressure difference, the roof is lifted and blown off with the wind.
iii) Bunsen burner: In a Bunsen burner, the gas comes out of the nozzle with high velocity. Due to this the pressure in the stem of the burner decreases. So, air from the atmosphere rushes into the burner.

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Which book i read ncert or reference

Posted by Devendra 10 7 years, 2 months ago

CBSE > Class 11 > Physics

4 answers

Priya Dharshini ☺☺ 7 years, 2 months ago

Ncert is best in chemistry

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Pragati Pandey 7 years, 2 months ago

Ncert

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Vimal Pathak 7 years, 2 months ago

Ncert ki kewl chemistry padho but physics me koi refresher jaise sbse best pradeep ye kro

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The Sushant 7 years, 2 months ago

In NCERT you must read chemistry.....Bio

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How i manage time to read physics books

Posted by Devendra 10 7 years, 2 months ago

CBSE > Class 11 > Physics

2 answers

Vimal Pathak 7 years, 2 months ago

Man lga lo usme physics aa jayegi aur time bhii manage hone lgenge

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The Sushant 7 years, 2 months ago

Focus..

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Hii everyone

Posted by . . 7 years, 2 months ago

CBSE > Class 11 > Physics

4 answers

Priya Dharshini ☺☺ 7 years, 2 months ago

Hello friends

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Pragati Pandey 7 years, 2 months ago

Hello ??

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Vimal Pathak 7 years, 2 months ago

Hello

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Isha Bhardwaj 7 years, 2 months ago

Hello...,??

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ANSWER

If a free body is doing pure rotational motions then the centre of the mass of the body will move or not

Posted by Abhishek Soni 7 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Shubham Kumar Gupta 7 years, 2 months ago

It depend on two factor...if the body is free or hinged about any part except c.o.m then the c.o.m will move while hinging about c.o.m then the c.o.m. will not move..

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The period of moon around the earth is 27.3 days and radius of the orbit is 3.9 ×10`5(it is 10 ki power 5) gravitational constant . Find the mass of the earth

Posted by Jiya Yadav 7 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Why we take accelaretion due to gravity ?

Posted by Sajid Ali 7 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Priya Dharshini ☺☺ 7 years, 2 months ago

When the object falls towards the earth due to the earth's gravitational force, it something we call as free fall of the object. ... The acceleration due to gravity is the acceleration produced in the freely falling body due to the influence of the gravitational pull of the earth. So it is necessary to consider acceleration of gravity also

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Why in centripetal force , work done is zero?

Posted by Sajid Ali 7 years, 2 months ago

CBSE > Class 11 > Physics

2 answers

Priya Dharshini ☺☺ 7 years, 2 months ago

We know that Work, W = F. S Cos θ. As the centripetal force is perpendicular to the dispalcement = 90 0 ⇒ Cos θ = Cos 90 0 ⇒ Cos θ = 0 ⇒ W = F. S Cos θ = 0 ⇒ W = 0

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Jiya Yadav 7 years, 2 months ago

Because centrifugal force is also acting just opposite to it

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Why in centripetal , work done is zero?

Posted by Sajid Ali 7 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

How collision happens ?

Posted by Anil Kumar 7 years, 2 months ago

CBSE > Class 11 > Physics

3 answers

Isha Bhardwaj 7 years, 2 months ago

Thanks Yash....?

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Mr. Thakur 7 years, 2 months ago

NICE.....

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Isha Bhardwaj 7 years, 2 months ago

When two bodies collide each other and exert relatively strong force to each other is called collision

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What is strong nuclear force

Posted by Deepanshu Shishodia 7 years, 2 months ago

CBSE > Class 11 > Physics

2 answers

Sanskar Singh 7 years, 2 months ago

The force whch hold together proton and nuetron in nucleus

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Amayra Singh 7 years, 2 months ago

The Strong Nuclear Force is one of the four basic forces in nature. As its name implies, it is the strongest of the four. However, it also has the shortest range, meaning that particles must be extremely close before its effects are felt. Apparently, its main job is to hold together the subatomic particles of the nucleus.

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Question

Posted by Shivshakti Singh 7 years, 2 months ago

CBSE > Class 11 > Physics