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Electric field due to a given charge as the space around the charge in which electrostatic force of attraction or repulsion due to the charge can be experienced by any other charge

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Assuming earth to be a sphere of uniform density what is the value of gravitational acceleration in a mine 100 kilometre below Earth's surface.radius of earth 6400 kilometre

Posted by Divyansh Patidar 7 years, 3 months ago

CBSE > Class 12 > Physics

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Vander second half

Posted by Varunika Tomar 7 years, 3 months ago

CBSE > Class 12 > Physics

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Three points A, B and C lie in uniform electric field (E) of 5 x 10^3 N/C such that AC=10cm, BC=6cm. A, B and c form a right triangle such that AB is parallel to direction of E, BC is perpendicular to the direction of E, ∠B =90°. Find the potential difference at A and C.

Posted by Pritam Ghosh 7 years, 3 months ago

CBSE > Class 12 > Physics

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Why ambulance signals are blue instead of ref

Posted by Anuksha V 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Karishma Grewal 7 years, 3 months ago

Because blue light has small wavelenght than red and more scatter formula is intensity of scattering of light is inversly proporationl to (walenght )rage to power 4

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A bar magnet is cut into two halv what is dipole moment

Posted by Shubham Bisht 7 years, 3 months ago

CBSE > Class 12 > Physics

3 answers

Princesses Kaur 7 years, 3 months ago

I not think that is happened give reason

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Princesses Kaur 7 years, 3 months ago

I not so

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Deepak Jindal 7 years, 3 months ago

Dipole moment will also be halved..

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Two charges q and -3q are placed fixed on x-axis seperated by distance 'd'. Where should a third charge 2q be placed such that it will not experience any force?

Posted by Shrey Shekhar 7 years, 3 months ago

CBSE > Class 12 > Physics

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How do we increase magnetic field of a fixed shape of magnet

Posted by Yogesh Kumar 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Mudit Bhardwaj 7 years, 3 months ago

By increasing current through it.

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What is EMI?

Posted by Shivam Shakya 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Zukini G 7 years, 3 months ago

Electromagnetic induction...when magnetic flux linked with coil changes emi is induced??

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Working of transformer.

Posted by Payal Srivastava 7 years, 3 months ago

CBSE > Class 12 > Physics

2 answers

Karishma Grewal 7 years, 3 months ago

It is base on mutual induction and working is to transfer voltage and current from one point to another

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Priyanshi Cha 7 years, 3 months ago

When the current is flows in primary coil, the magnetic flux linked with the secondary coil changes ,an alternating induced emf obtained across secondary coil

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Name two parameters of em waves which oscillate with some frequency

Posted by Sridhar Chella 7 years, 3 months ago

CBSE > Class 12 > Physics

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What E. M. W is used in :- (M.M = 5) 1} eye surgery 2} see microbes 3} endoscopy 4}send signals to astronaut in space 5} extraction of metals

Posted by Aman Sikarwar 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Karishma Grewal 7 years, 3 months ago

1)uv 2)visible 4)IR rays 5) x& gama rays

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''Current is flow in wire like water in rubber pipe " "When rubber pipe is twist and turn then amount of water flow is increase or decrease" So , We can say that's all about current in wire?

Posted by Aman Sikarwar 7 years, 3 months ago

CBSE > Class 12 > Physics

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What is polarization of light. Also explain plane of polarization and plane of vibrations with suitable diagram?

Posted by Aman Sikarwar 7 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Deepak Jindal 7 years, 3 months ago

It is property applying to transverse waves that specifies the geometrucal orientation of the oscillations.

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What is sensitiveness of wheat stone bridge?

Posted by Deepanshu Garg 7 years, 3 months ago

CBSE > Class 12 > Physics

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Which machine is used to accelerate charged particles? Explain with its resonatic condition.

Posted by Rekha Vishwakarma 7 years, 3 months ago

CBSE > Class 12 > Physics

3 answers

Priyanshi Cha 7 years, 3 months ago

Cyclotron When applied frequency became equal to cyclotron frequency because so adjusted frequency of an source, Whenever a charge particle come from lst dee it experience opposite charge on 2nd dee.which keeps rotate the charge particle

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Deepak Jindal 7 years, 3 months ago

Cyclotron

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Gourav Sakar 7 years, 3 months ago

Cyclotrone

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Syllabus of2018-19

Posted by Nitu Khushwah 7 years, 3 months ago

CBSE > Class 12 > Physics