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

Significant figures= all certain figures + firts uncertain figure. For example in 6.041 has 4 significant figurez 6, 0, 4 are certain while 1 is uncertain. To finde the number of significant figures there are certain rules which you can study in NCERT book.

0Thank You

ANSWER

Explain newton's second law of motion

Posted by Riya Dhillon 7 years, 5 months ago

CBSE > Class 11 > Physics

3 answers

Parth Joshi 7 years, 5 months ago

it is not easy apnee apnee soach

4Thank You

Ďãřşháñăã Yadav ? ? ? ✊ 7 years, 5 months ago

Newton's Second Law of motion states that the rate of change of momentum of an object is proportional to the applied unbalanced force in the direction of the force. ie., F=ma Where F is the force applied, m is the mass of the body, and a, the acceleration produced.

5Thank You

Samraat Bhati 5 years, 8 months ago

Very easy ...didn't you focus in 9th class???

1Thank You

ANSWER

What is principal of homogenerity

Posted by Parth Joshi 7 years, 5 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Prove that velocity is directly proportional to square root acceleration due to gravity into Radius centre

Posted by Firstson Dkhar 7 years, 5 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Wjjsnsnnd

Posted by Firstson Dkhar 5 years, 8 months ago

CBSE > Class 11 > Physics

1 answers

Isbella S 7 years, 5 months ago

whats this ??

2Thank You

ANSWER

The escape velocity(V) of the body on the surface of the earth depends on 1)accelerationdue to gravity(g) 2)radius (R) cebtre of the earth. Prove dimensionally V directly proprtional to square root gR

Posted by Firstson Dkhar 7 years, 5 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

The equation of state of some gases can be expressed as( p+a/v×v ) (v-b) =RT. Here p is pressure, v is volume , t is absoute temperature & a,b,c&r are constant, what are dimensions of a and b

Posted by Khizar Rehman 7 years, 5 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is the meaning of precision and accuracy ?

Posted by Shahnawaz Shaikh 7 years, 5 months ago

CBSE > Class 11 > Physics

1 answers

Ranjana Randhawa 7 years, 5 months ago

Accuracy means how near the number is to the exact numerical value while precision means upto how much scientific figures does the numerical value exist....probably.???

2Thank You

ANSWER

if the momentum of the body is doubled by what percentage does its k.e changes

Posted by Aryaman Vashisht 7 years, 5 months ago

CBSE > Class 11 > Physics

1 answers

Sunanda Singh 7 years, 5 months ago

Kinetic Energy(E) = 1/2mv^2 ——(1)

Momentum(P) = m*v ————(2)

From equation 1

1/2 * m * v *v

1/2 * p*v

So, E = 1/2pv.

This is the relation that is been induced from these two equations. So kinetic energy become half.

0Thank You

ANSWER

The length of a conductor is reduced by 4% and the area of cross section is reduced by 8%. Find Out the percentage change in resistance of the conductor.

Posted by Isbella S 7 years, 5 months ago

CBSE > Class 11 > Physics

2 answers

Isbella S 7 years, 5 months ago

plzz answer this...dont give useless comments

0Thank You

Samraat Bhati 7 years, 5 months ago

It is very easy.

2Thank You

ANSWER

Which of the following is not characteristic of matter ? (A)mass (B)volume (C) both a and b (D) none of these

Posted by Helly Patel 7 years, 5 months ago

CBSE > Class 11 > Physics

4 answers

Karan Panigrahi 7 years, 5 months ago

0Thank You

Gowshiga Pichamuthu 7 years, 5 months ago

(D)

0Thank You

Gowshiga Pichamuthu 7 years, 5 months ago

(C)

0Thank You

Kushal Patil 7 years, 5 months ago

b)Volume

0Thank You

ANSWER

A body moves from x=-1 to x=4.what Will be the displacement?

Posted by Akanksha Patel 7 years, 5 months ago

CBSE > Class 11 > Physics

8 answers

Akanksha Patel 7 years, 5 months ago

Any one Who can explain how it is -3

0Thank You

Akanksha Patel 7 years, 5 months ago

Its not 5 the correct answer is -3

0Thank You

Navneet Singh 7 years, 5 months ago

5 so easy?

0Thank You

Geetesh Rathore 7 years, 5 months ago

Correct 5 units

0Thank You

Aman Kumar 7 years, 5 months ago

Displacement=5...

0Thank You

Sanjana ? 7 years, 5 months ago

Displacement =5

0Thank You

Rajeev Kapil 7 years, 5 months ago

5 (4-(-1))

0Thank You

Himanshu Jha 7 years, 5 months ago

Displacement = 5 ??

2Thank You

ANSWER

The valu of the function (x_1)(x_2)sq at its maxima is

Posted by Kunaljit Barman 7 years, 5 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Why gravitational force does not act on fire?

Posted by Siddharth Singh 7 years, 5 months ago

CBSE > Class 11 > Physics

3 answers

Vishwajeet Kumar 7 years, 5 months ago

Mass of fire is much lowere than even air and gravitaional force cannot resist it .

0Thank You

Gomathi Srinivasan 7 years, 5 months ago

May be

0Thank You

Utsav Kumar Shukla 7 years, 5 months ago

Beacuse mass of fire is zero i guess so gravitational doesnt act on fire

4Thank You

ANSWER

the error in two readings of A are 0.01 and-0.3 then mean absolute error is

Posted by Nancy Rajput 7 years, 5 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What are desirable charectersticks of units?

Posted by Nischay Khandegar 7 years, 5 months ago

CBSE > Class 11 > Physics

1 answers

Vishwajeet Kumar 7 years, 5 months ago

It should be globally accepted . It should be convenient and easy to use. Its value should not be changed over place to place.

0Thank You

ANSWER

clear solution for lesson 2 example problem 2.9

Posted by Koushik Kumar 7 years, 5 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

How to derive the 4th equation of motion in calculus method

Posted by Budhaditya Mukherjee 7 years, 5 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is the first term chapter in physics and chemistry

Posted by Sandeepan Roy 7 years, 5 months ago

CBSE > Class 11 > Physics

1 answers

Ďãřşháñăã Yadav ? ? ? ✊ 7 years, 5 months ago

in physics = chapter 1 to chapter 13.. and in chemistry I don't know right now. ?

3Thank You

ANSWER

In physics 1st chapter physical world is important for exam point of view????

Posted by Akash Choudhary Dav Gandhinagar 7 years, 5 months ago

CBSE > Class 11 > Physics

4 answers

Gomathi Srinivasan 7 years, 5 months ago

Is it important for NEET exam.........so plz dont skip.....????

0Thank You

Nancy Rajput 7 years, 5 months ago

no it is not for exam its only for reading and knowledge

1Thank You

Ďãřşháñăã Yadav ? ? ? ✊ 7 years, 5 months ago

No.. it is only for our knowledge.

0Thank You

Aman Kumar 7 years, 5 months ago

We can't neglect it but I think its not important as others

0Thank You

ANSWER

Guys plzz suggest me reference books for PCB

Posted by Divya D Synrem 7 years, 5 months ago

CBSE > Class 11 > Physics

5 answers

Gowshiga Pichamuthu 7 years, 5 months ago

I too have same doubt.I don't know which reference to choose.please answer fast.

1Thank You

Rini Shukla 7 years, 5 months ago

Modern abc

1Thank You

Aditya Raj 7 years, 5 months ago

kc sinha math

1Thank You

Aditya Raj 7 years, 5 months ago

Modern ABC che

1Thank You

Aditya Raj 7 years, 5 months ago

hc verma physics

2Thank You

ANSWER

Two parallel and opposite force of 4000N are applied tangentially on the upper and lower of 25 cm

Posted by Aditya Singh 7 years, 5 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

As we al know momentum is equal to the product of mass and velocity but why not equal to the product of mass and speed

Posted by Vishesh Phutela 7 years, 5 months ago

CBSE > Class 11 > Physics

2 answers

Vishesh Phutela 7 years, 5 months ago

But momentum is vector because of velocity but if we take spedd its also a scaler aman

1Thank You

Aman Kumar 7 years, 5 months ago

Because I think speed is a scaler quantity and velocity is a vector quantity...

0Thank You

ANSWER

Convert 319 kg/m3 to g/m3 by using dimensional formula

Posted by Dipshikha Yadav 7 years, 5 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Check the correctness of the relation V=underroot 2 G M upon r where r=radius of earth g=gravitational constant and m= mass

Posted by Yuvraj Singh 7 years, 5 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

PCM ka koi calculater hai

Posted by Srishti Chaudhary 7 years, 5 months ago

CBSE > Class 11 > Physics

3 answers

Srishti Chaudhary 7 years, 5 months ago

Kon sa

0Thank You

Aman Kumar 7 years, 5 months ago

Any question , any one

0Thank You

Manika Gupta 7 years, 5 months ago

Yes

1Thank You

ANSWER

Laws of motion

Posted by Nitin Kumar 7 years, 5 months ago

CBSE > Class 11 > Physics

1 answers

Ďãřşháñăã Yadav ? ? ? ✊ 7 years, 5 months ago

There are total three laws of motion :- 1) First Law states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force . it is also known as inertia. 2)SECOND LAW OF MOTION states that when a force acts upon an object that has a specified mass, a corresponding acceleration is produced. 3)Third law of motion states that for every action there is equal and opposite reaction.

1Thank You

ANSWER

List some technology and their principles

Posted by Ann Maria Sunny 7 years, 5 months ago

CBSE > Class 11 > Physics