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

$$\begin{lgathered} \boxed{\begin{array}{l}\sf \; \; \; \; \; \;\;\; Name\;of \ School \;\;\; \; \;\;\;\;\: \\ \sf \; \; \;\;\;\; \;\;\; \; \;\;\;\; \;\; Notice \\ \sf \: Date \\ \sf \; \; \;\;\;\; \;\;\; \; \;\;\;\; \;\; Title \\ \\ \sf ( Body / Content ) \\ \\ \sf \: Signature\\ \sf \; Name \\ \end {array}}\end{lgathered}$$

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Aseem Mahajan 5 years ago

$$\begin{gathered}\begin{lgathered} \boxed{\begin{array}{l}\sf \; \; \; \; \; \;\;\; Name\;of \ School \;\;\; \; \;\;\;\;\: \\ \sf \; \; \;\;\;\; \;\;\; \; \;\;\;\; \;\; Notice \\ \sf \: Date \\ \sf \; \; \;\;\;\; \;\;\; \; \;\;\;\; \;\; Title \\ \\ \sf ( Body / Content ) \\ \\ \sf \: Signature\\ \sf \; Name \\ \end {array}}\end{lgathered}\end{gathered}$$

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ANSWER

Sb hairaan kyu hore ho these are codings ?

Posted by Aseem Mahajan 5 years ago

CBSE > Class 11 > Physics

5 answers

Aseem Mahajan 5 years ago

Axcha aesa hai ?
$$\boxed{shajja \\ sjjssb\\ nanaj}$$

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Aadya Singh 5 years ago

Heyyy Tammana ?

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Aadya Singh 5 years ago

Good... N uhhh??? Aur mai hairan nahi ho rhii.... I know ye coding hai ?????... Aur thodi bhot mereko bhi aati hai... ??..

1Thank You

?? Tamanna ? 5 years ago

Hloo frnds !!

1Thank You

Aseem Mahajan 5 years ago

Btw how are you aadu ?

1Thank You

ANSWER

<font color = "green"> $$\sf{\huge{\underline{\dag What \ is \ projectile}}}%%

Posted by Aseem Mahajan 5 years ago

CBSE > Class 11 > Physics

3 answers

Aadya Singh 5 years ago

???

2Thank You

Vivek Kumar 5 years ago

Are you a computer student.....??I think so

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Aseem Mahajan 5 years ago

$$\sf{\huge{\underline{\dag What \ is \ projectile}}}$$ That coding was wrong ?

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ANSWER

$I know to change the width of videos ?$

Posted by Aseem Mahajan 5 years ago

CBSE > Class 11 > Physics

3 answers

Aseem Mahajan 5 years ago

I challenge for this :p

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Aseem Mahajan 5 years ago

Ye krke dikhay xD

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Aseem Mahajan 5 years ago

$$\boxed{\huge{\mathfrak{Coding \ challenge }}}$$

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ANSWER

Posted by ? ? 5 years ago

CBSE > Class 11 > Physics

5 answers

? ? 5 years ago

<div style="overflow:hidden;position: relative;"><iframe frameborder="0" scrolling="no" marginheight="0" marginwidth="0"width="300" height="300" type="text/html" src="https://www.youtube.com/embed/EdR4Xs9oBLw?autoplay=1&fs=1&iv_load_policy=3&showinfo=0&rel=1&cc_load_policy=0&start=0&end=0"></iframe><div style="position: absolute;bottom: 10px;left: 0;right: 0;margin-left: auto;margin-right: auto;color: #000;text-align: center;"><small style="line-height: 1.8;font-size: 0px;background: #fff;"> </small></div><style>.newst{position:relative;text-align:right;height:420px;width:520px;} #gmap_canvas img{max-width:none!important;background:none!important}</style></div>

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Aseem Mahajan 5 years ago

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Aseem Mahajan 5 years ago

Accepted ?

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Aseem Mahajan 5 years ago

I understood its challenge to me?

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? ? 5 years ago

?sorry!

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Hey guys... Plz tell me Law of attraction?

Posted by Chehak .. 5 years ago

CBSE > Class 11 > Physics

0 answers

ANSWER

<button onclick="myFunction()">Click here for my question</button> <script> function myFunction() { alert("What is angular projectile?"); } </script>

Posted by Aseem Mahajan 5 years ago

CBSE > Class 11 > Physics

3 answers

Aseem Mahajan 5 years ago

I cant tell

1Thank You

Miss Ananya 5 years ago

Ur brainly id ??

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Aseem Mahajan 5 years ago

Leave it not working?

1Thank You

ANSWER

Define relative error

Posted by Lalthan Mawii 5 years ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 5 years ago

Relative Error

The relative error is the ratio of the mean absolute error Δa_meanto the mean value a_mean of the quantity measured.

i.e., Relative error = Δa_mean/ a_mean

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What is mean by Planck's Constant dimensional formula of Planck's Constant

Posted by Raghuvanshi Prem Pawan 5 years ago

CBSE > Class 11 > Physics

2 answers

Raghuvanshi Prem Pawan 5 years ago

What is retardation

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Yogita Ingle 5 years ago

The proportionality constant which relates the energy of a photon to the frequency of its related electromagnetic wave is known as Planck’s constant.

Planck′s;constant(h)= Energy(E)/ frequency(upsilon)

The dimensional formula of energy = [M¹L²T^-2]

The dimensional formula of frequency = [M⁰L⁰T^-1]

The dimensional formula of Planck’s constant = [M¹L²T^-2]/ [M⁰L⁰T^-1]

Therefore, the dimensional formula of Planck’s constant is [M¹L²T^-1]

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ANSWER

Convert an acceleration of 45km min-2 into ms-2

Posted by Lalthan Mawii 5 years ago

CBSE > Class 11 > Physics

5 answers

Lalthan Mawii 5 years ago

Why can it become 12.5m/s2 where is -2

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Lalthan Mawii 5 years ago

Why????

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Yogita Ingle 5 years ago

3.6 km/m²= 1m /s²

Hence 45 km /m² ÷ 3.6 = 12.5 m /s²

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Lalthan Mawii 5 years ago

I don't know the answer pls can you help me

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Lalthan Mawii 5 years ago

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ANSWER

Which is independent of choice of origin??
a) Position vector
b) Displacement vector
c) Both of the above
d) None of above.

Posted by Aadya Singh 5 years ago

CBSE > Class 11 > Physics

2 answers

Satyam Satyam 5 years ago

None

2Thank You

Aadya Singh 5 years ago

Thank you?

5Thank You

ANSWER

If value of voltage and current across resistance R are (20+_0.2) volt and (1.2+_0.2) Amphere. Then calculate error in R. Relative error and percentage error in R.

Posted by Khushi Singhal 5 years ago

CBSE > Class 11 > Physics

1 answers

Aseem Mahajan 5 years ago

Relative error = ∆R/R = ∆V/V + ∆I/I
= ∆R/R = 0.2/20 + 0.2/1.2 = ∆R/R = 0.01 + 0.16 = ∆R/R = 0.17

Percentage error = ∆R/R × 100 = 0.17 × 100 = 17%

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Two equal forces are applied and the resultant of the two forces are 1.5 F. Then what will be the angle between the two forces?

Posted by Gakendra Gadkar 5 years ago

CBSE > Class 11 > Physics

1 answers

Aseem Mahajan 5 years ago

What is F here ?

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ANSWER

if the velocity of light c, acceleration due to gravity g and atmospheric pressure p are the fundamental quantities, find the dimensions of length by learn cbse.

Posted by Tanisha Rathore 5 years ago

CBSE > Class 11 > Physics

1 answers

Gakendra Gadkar 5 years ago

L=c/g

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ANSWER

What is concurrent vector??

Posted by Aadya Singh 5 years ago

CBSE > Class 11 > Physics

2 answers

Aadya Singh 5 years ago

Gud Mrng broo?

2Thank You

Aadya Singh 5 years ago

Hiii... Gud mrng to you both??

1Thank You

ANSWER

What is zero vector???

Posted by Aadya Singh 5 years ago

CBSE > Class 11 > Physics

3 answers

Aadya Singh 5 years ago

thanks to both ?... hello broo.. mai ekdum vdiyaaa ?... aap??? ?

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Aseem Mahajan 5 years ago

Hlo aadu .. kesi ho aap Zero vector = vector with zero magnitude Unit vector = Vector which has a direction but hasmagnitude of 1 . Example - i cap , j cap etc Ye last ques ka ans jo aata hai ?

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Yogita Ingle 5 years ago

When the magnitude of a vector is zero, it is known as a zero vector. Zero vector has an arbitrary direction.

Examples: (i) Position vector of origin is zero vector.

(ii) If a particle is at rest then displacement of the particle is zero vector.

(iii) Acceleration of uniform motion is zero vector.

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ANSWER

What is coplaner vector??

Posted by Aadya Singh 5 years ago

CBSE > Class 11 > Physics

3 answers

Aadya Singh 5 years ago

Gye kyaaa??? Chalo.... Bbyeee ?... See ya ?

2Thank You

Aadya Singh 5 years ago

Hnn??... Btw... I think today we both are going to get block here ???

2Thank You

Aadya Singh 5 years ago

Ptaaa nahi... I think sab jyada padhai kar rhe hai...... Time nahi milta kisi ko ?????

3Thank You

ANSWER

What is unit vector??

Posted by Aadya Singh 5 years ago

CBSE > Class 11 > Physics

3 answers

Aadya Singh 5 years ago

Phir thik ko badhiya karo???

3Thank You

Aadya Singh 5 years ago

Ok ?

1Thank You

Aadya Singh 5 years ago

Thik chal rii padhai ?... Apki??? ?

1Thank You

ANSWER

What is position vector???

Posted by Aadya Singh 5 years ago

CBSE > Class 11 > Physics

4 answers

Aadya Singh 5 years ago

Thnaks to all ?

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Aseem Mahajan 5 years ago

Vector which defines the position of any particle/object from the origin of fr!me of reference . It is denoted by r vector

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Yogita Ingle 5 years ago

Position Vector: Position vector of an object at time t is the position of the object relative to the origin. It is represented by a straight line between the origin and the position at time t.

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Mandeep Kaur 5 years ago

Position vector, straight line having one end fixed to a body and other end attached to a moving point and used to describe the position of the point relative to the body.

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ANSWER

If y = then find initial velocity;angle ; range

Posted by Sheela Choudhary 5 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Hlo friends I m new here

Posted by Anjali Tiwari 5 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Rules of absolute and relative error

Posted by Jaya Jeevan 5 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 5 years, 1 month ago

Absolute Error

Absolute error is the difference between measured or inferred value and the actual value of a quantity. The absolute error is inadequate due to the fact that it does not give any details regarding the importance of the error. While measuring distances between cities kilometers apart, an error of a few centimeters is negligible and is irrelevant. Consider another case where an error of centimeters when measuring small machine parts is a very significant error. Both the errors are in the order of centimeters but the second error is more severe than the first one.

Relative Error

The relative error is defined as the ratio of the absolute error of the measurement to the actual measurement. Using this method we can determine the magnitude of the absolute error in terms of the actual size of the measurement. If the true measurement of the object is not known, then the relative error can be found using the measured value. The relative error gives an indication of how good measurement is relative to the size of the object being measured.

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Explain the relationship between absolute, relative and percentage error? Please help me?

Posted by Jaya Jeevan 5 years, 1 month ago

CBSE > Class 11 > Physics

2 answers

Aseem Mahajan 5 years ago

Yogita mam how to apply LaTex here

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Yogita Ingle 5 years, 1 month ago

Absolute Error: The magnitude of the difference between the true value of the quantity and the individual measurement value is called absolute error of the measurement. It is denoted by |Δa| (or Mod of Delta a). The mod value is always positive even if Δa is negative. The individual errors are:

Δa₁ = a_mean - a₁, Δa₂ = a_mean - a₂, ……. ,Δa_n = a_mean – a_n