Incorrect URL accessed!!!!

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Derive R=2F for convex mirror

Posted by Aditi Joshi 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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Expression for mutual inductance between two solenoid

Posted by Ankur Gupta 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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Here is good news for all the CBSE 12 Students.

The dates sheet for CBSE 12 has been announced on 11 January 2018.

As per the given dates in [url=https://scoop.eduncle.com/cbse-board-class-12-date-sheet-and-time-table]CBSE Class 12 Date Sheet 2018[/url], the exams for 12^th board will start from 16 January 2018.

Those who are going to appear in board exam, must note down the dates and start preparing the study schedule.

Best of luck to all!

Posted by Ravi Mahawar 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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Draw a labelled ray diagram of an astronomical telescope in the normal adjustment position and find the magnitudes of: a) The length of the telescope b) The magnification of the telescope if the focal length of the objective lens is = 15 m and the focal length of an eye lens is 5 cm.

Posted by Deepak Kumar 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Bhartendra Singh 5 years ago

fast

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9 x 10

Posted by Hemdojit Bathari 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Arpita Banerjee 7 years, 11 months ago

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How is dipol

Posted by Vivek Yadav 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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How are microwave produce?

Posted by Shivanshu Yadav 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Sudhanshu Saumya 7 years, 11 months ago

They are produced by special types of tubes named as klysteron, magnetrons, and Gunn diodes

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N-1 more polaroids are inserted between two cross polaroids theri axis is epually spaced hoaw does transmitted intemsity behave for large N

Posted by Diya Goyal 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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In ydse what is the intensity at the point on a screen situated at a dis of 1/4th of fringe separation from centre

Posted by Diya Goyal 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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Very less time given in phy.... How to study 15 chapters and questions in 1day....?????

Posted by Paniti Sinha 7 years, 11 months ago

CBSE > Class 12 > Physics

3 answers

Annapurna Mishra 7 years, 11 months ago

Write all the formulas and solve only numericals from sample question paper

Shivanshu Yadav 7 years, 11 months ago

Abhi time h board exam m

Paniti Sinha 7 years, 11 months ago

Impossible for me ... ???

5Thank You

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Nature of trajectory of charged particle at 0°

Posted by Bhavana Srinivas 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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Why mass of nucleus is less than sum of mass of neutron and proton

Posted by Shivam Jha 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Ishika Tanwani 7 years, 11 months ago

Coz binding energy of nucleus is less than that of sum of the two b.e

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Physics most easy and short ch????...

Posted by Sharma Saabh 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Annapurna Mishra 7 years, 11 months ago

Ray optics , electrostatics and electric charges and potential

Pranjali Mahajan 7 years, 11 months ago

Emi ac em waves semiconductors its lengthy but easy communication

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Two Independent source are not coherent why?

Posted by Anshu Anshu 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Sudhanshu Saumya 7 years, 11 months ago

It's practically impossible for two sources to generate light having exactly same wavelength or frequency. So they are never coherent.

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What is malus law

Posted by Joni Singh 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Sudhanshu Saumya 7 years, 11 months ago

When pass axis of analyser makes an angle β with the pass axis of Polaroid then intensity of plane polarised light coming out of the analyser will be square of the cosine of the angle between pass axis. I is directly proportional to (cosβ)2(square). I = (Io)(cosβ)2(square)

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Time peiod is indepndent on circular path

Posted by Jyoti Sulodhia 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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Which quantity remain same in microwave 1mm and uv radiation of 1600 in a vaccum

Posted by Shivanshu Yadav 7 years, 11 months ago

CBSE > Class 12 > Physics

3 answers

Sudhanshu Saumya 7 years, 11 months ago

Welcome

Shivanshu Yadav 7 years, 11 months ago

Thnx

Sudhanshu Saumya 7 years, 11 months ago

It's speed

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expression for electric potential due to dipole

Posted by Raja Tesia 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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Is van de Graff generator in our syllabus or not??

Posted by Shambhavi Sinha 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Parijat Prasoon 7 years, 11 months ago

no it's not in our syllabus.

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How can we defined columbs law

Posted by Vishal Sharma 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Annapurna Mishra 7 years, 11 months ago

The electrostatic forces bet. two charge q1 and q2 is directally proportional to magnitude of charge and inversely proportional to the squire of dist bet. them.

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Derive the expression for electrical conductivity of a material in terms of relaxation time

Posted by Benita Benoy 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Sudhanshu Saumya 7 years, 11 months ago

v = I/neA, v = eEt/m where v is drift velocity, I is current inside the conductor, n is no. of electrons per unit volume, e is electronic charge present on the electron, A is area of cross section, E is electric field applied across the conductor, t is the relaxation time, m is the mass of electron. I/neA = etE/m, I/A = (ne2(square)t/m)E, I/A = αE where α is ne2(square)t/m I/A = αV/L where V is potential difference and L is the length of conductor. V = LI/Aα, V = (1/α)(LI/A) V = RI which is ohms law, We can see that 1/α acts as resistivity of the conductor, hence α will be conductivity Conductivity of a material = ne2(square)t/m where t is relaxation time.

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How many centrals in parallel to The galvanometer of the G resistor will the 1 /n portion of the flow through the sant

Posted by Madhusudan Das 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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How

Posted by Madhusudan Das 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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Explain how electron mobility changes for a good conductor when applied potential diff is doubled at constant temperature

Posted by Snigdha Sagar 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Vishal Sahu 7 years, 11 months ago

Mobility doesn't depend on potential difference,so it is no effect on mobility

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Law of reflection using Huygens principle

Posted by Tra Kh 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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Posted by Supriya Das 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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Use huygen's principle to show the propagation of a plane wave front from a denser medium to a rarer medium

Posted by Supriya Das 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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What should I study in physics??

Posted by Dhruv Gupta 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Arpita Banerjee 7 years, 11 months ago

According to marks distribution you can study physic or any other subject. It help us to stay focused on the marks we want to achieve and basically in physics deviations are very important..

Annapurna Mishra 7 years, 11 months ago

All chapter but specially wave optics