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A plano convex lens of focal length 20 cm is silvered at plane surface . Now focal length will be

Posted by Kumari Beauty Sinha 7 years, 4 months ago

CBSE > Class 12 > Physics

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Vernier callipers experient

Posted by Apoorv Mahul 7 years, 4 months ago

CBSE > Class 12 > Physics

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five charges +q are placed at the vertices of pentagon what is the magnitude of force on isolated charge Q at the centre of pentagon due to all charges at vertices

Posted by Prashant Sharma 7 years, 4 months ago

CBSE > Class 12 > Physics

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B K J 7 years, 4 months ago

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Continuity of current

Posted by Ayush Singh 7 years, 4 months ago

CBSE > Class 12 > Physics

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Chapter- electric feild

Posted by Rohit Sharma 5 years, 5 months ago

CBSE > Class 12 > Physics

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Electric potential

Posted by Tushar Sharma 7 years, 4 months ago

CBSE > Class 12 > Physics

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Nishant Rai 7 years, 4 months ago

It is the ability to bring a point charge from infinity to a given point

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Gauss theorem?

Posted by Dk Gaud 7 years, 4 months ago

CBSE > Class 12 > Physics

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Kanu Priya 7 years, 4 months ago

It states that the electric feild intensity of charge is 1/epsilon not times to the charge

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Two mutually perpendicular long straight conductors carrying uniformly distributed charges of linear charge densities (D1) and (D2) are positioned at a distance a from each other. What is the force between them? Results in English Results in English

Posted by Md Akhtar 7 years, 4 months ago

CBSE > Class 12 > Physics

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A charge 10 coulamb kept at a mid point of a face of a cube then find the Flux associated with it cube

Posted by Snehal Shukla 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Ashutosh Kumar 7 years, 4 months ago

q /e not

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A 10 microcoulomb kept at a corner of cube then find the net Flux associated with it.

Posted by Snehal Shukla 7 years, 4 months ago

CBSE > Class 12 > Physics

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calculate the heat generated when a capacitor of 100 micro farad capacitance and charged to 200 V is discharged through a 2 ohm resistance?

Posted by Alina Niazi 7 years, 4 months ago

CBSE > Class 12 > Physics

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Electric charges and fields

Posted by Keerthishree B P 7 years, 4 months ago

CBSE > Class 12 > Physics

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A set of n identical resistors of resistance R when connected in series have an effective resistance of X ohm and when connected in parallel the effective resistance is Y ohm find the relation between R X and Y

Posted by Nyayir Bam 7 years, 4 months ago

CBSE > Class 12 > Physics

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The value of acceleration due to gravity at a depth of 1600 km is equall to

Posted by Madhu Sudan 7 years, 4 months ago

CBSE > Class 12 > Physics

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How many chapters are there in class 12 physics!

Posted by Aman Singh 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Akhil Bohra 7 years, 4 months ago

15 chapters are in physics 12th

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Derive the formula for refractive index

Posted by Sagar Mundel 7 years, 4 months ago

CBSE > Class 12 > Physics

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Define conduction

Posted by Hi Ajju 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Shreya Verma 7 years, 4 months ago

Conduction is a method of charging two uncharged bodies by bringing both the bodies in contact with each other with the help of a conducting ( which allows transfer of electrons or charges through it) wire. This method states that same kind of charge is transferred from one body to other in equal amount.

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Electric filled

Posted by Nishant Tamrakar 7 years, 4 months ago

CBSE > Class 12 > Physics

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graph between terminal potential difference V and internal resistance r

Posted by Vima Verma 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Sia ? 4 years, 3 months ago

A student measures the terminal potential difference (V) of a cell ( of emf E and internal resistance r) as a function of the current (I) flowing through it.

To find the slope and intercept of the graph between V and I

The general equation of EMF in cell:

V = E − ir
⟹ V = E + i(−r)

Compare it with standard equation of the line:

y = mx + c
⟹ y = c + mx

Since graph of student is V vs I

∴ V is y and I is x

Therefore, E is intercept and (−r) is slope

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2018 paper answers sheet plz release soon

Posted by Gaurav Kinariwale 7 years, 4 months ago

CBSE > Class 12 > Physics

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2 positively charge point charges repel each other with a force of 18 N when placed at a separation of. 1m apart if The sum of the charges are 9micro coulamb calculate their values

Posted by Sonali Sahu 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

R S 7 years, 4 months ago

3 and 6 microcoulomb

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What is the area of plate of 2f parallel plate capacitor given separation between plates of 0.5cm

Posted by Saurav Bhardwaj 7 years, 4 months ago

CBSE > Class 12 > Physics

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What is the area of the plate of a 2f parallel plate capacitor given separation between the plates 0.5cm

Posted by Saurav Bhardwaj 7 years, 4 months ago

CBSE > Class 12 > Physics

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What is electromagnetic wave?

Posted by Dharshika As 7 years, 5 months ago

CBSE > Class 12 > Physics

1 answers

Raghav Dogra 7 years, 4 months ago

: Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. In other words, EM waves are composed of oscillating magnetic and electric fields.

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What is an electromagnetic save?

Posted by Dharshika As 7 years, 5 months ago

CBSE > Class 12 > Physics

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Posted by Devansh Dubey 7 years, 5 months ago

CBSE > Class 12 > Physics

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Expression for potential due to a point charge

Posted by Sanskar Gupta 7 years, 5 months ago

CBSE > Class 12 > Physics

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Two charges 'q' each with mass 'm' are hungwith string with 'l' length under gravity. Assuming q>0 .Find the angle between the string under equillibrium .

Posted by Tarun Asthana 7 years, 5 months ago

CBSE > Class 12 > Physics

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a square of side 9.3cm has three charges of charge 33nc,51nc and 47nc.what will be the electric potential on forth corner of the square?

Posted by Sayma Naz 7 years, 5 months ago

CBSE > Class 12 > Physics

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How can you charge a metal sphere positively without touching it ?

Posted by Akash Maurya 7 years, 5 months ago

CBSE > Class 12 > Physics

2 answers

Soumya Khandal 7 years, 5 months ago

By bringing a negative charged rod (example plastic rod) close to sphere. The near end becomes+ve charge and electronsthrough conducting wire flows to ground .hence through induction sphere get +ve charge.

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Preet Singh 7 years, 5 months ago

By method of induction or conduction

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