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If a charge is situated at the centre of a cube then what will be the flux?

Posted by Farah Naaz 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Ayush Parija 7 years, 2 months ago

Yes right

0Thank You

G K 7 years, 2 months ago

R u asking.... the flux through 1 face?..... If yes, then ans. ?flux through surface of cube is 6ϕ , where ϕ is flux through each face...... by Gauss's law,..... ..... 6ϕ=q/∈0...... .....=> ϕ=q/6∈0.....?

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ANSWER

Sir please tell me how to improve numerical ability in physics. Should i follow ncert book or reference for studying physics

Posted by Mohd Salman 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

G K 7 years, 2 months ago

Yes he is ry8, only practice makes u perfect ?

0Thank You

Ayush Parija 7 years, 2 months ago

Pratice pratice .there is no other way.be sure that your basics is strong

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How does electric flux due to a point charge enclosea by a gaussain surface get affected when its radius is increased?

Posted by Kanu Taunk 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Hy Shona 7 years, 2 months ago

It remains same because electric flux do not depend on radius.

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What is Total Internal Reflection?

Posted by Arti Vishwakarma 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Akshat Sharma 7 years, 1 month ago

When angle of incidence is greater than critical angle......when light is traveling from densor to rare

1Thank You

Aditya Sharma 7 years, 2 months ago

When a light ray travel densor to rarer medium and the angle of incidence is greater than the critical angle then , the light ray do not travel toward other medium while it return back to the same medium , according to law of reflection. It is called total internal reflection

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Why do we use sign convention again as we have already used in dervation for mirror formula ?

Posted by Divyam Jaiswal 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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The radius of carvature of either face of a convex lens is equal to it focal length. What is the refractive index of the material?

Posted by Amardeep Kumar 7 years, 2 months ago

CBSE > Class 12 > Physics

2 answers

Shubham Sharma 7 years, 1 month ago

1.5

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Vanshika Chauhan 7 years, 2 months ago

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Posted by Kittu Kumar Chandrawanshi 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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Given any two limitation of ohm's law

Posted by Shiva Gupta 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Yogita Ingle 7 years, 2 months ago

Limitations of Ohm’s law :

Ohm’s law is valid for metal conductors, provided the temperature and other physical conditions remain constant.
Ohm’s law is not applicable to gaseous conductors.
Ohm’s law is also not applicable to semi-conductors such as Germanium and Silicon.

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Explain Hertzian Experiment on Electromagnetic Waves.

Posted by Simran Talreja 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Hy Shona 7 years, 2 months ago

In 1888,Hertz succeeded in experimentally confirming the existence of em wave.By using oscillator LC circuit ,he not only produced and detected em wave , but also demonstrated their properties of reflection ,refraction and interference and established beyond doubt that light radiation has wave nature.

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Define the term mobility of charge carries in a conductor . Write its S.I unit.

Posted by Arjun Rajput 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

G K 7 years, 2 months ago

..... ?drift velocity per unit of electric field strength is MOBILITY?..... SI unit - m^2/(Volt. sec).....:-)✔️

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Does v=u in optics

Posted by Rahul Kumar 7 years, 2 months ago

CBSE > Class 12 > Physics

4 answers

G K 7 years, 2 months ago

Centre of carvature per object hoga,....

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G K 7 years, 2 months ago

Oh no...Trashti 2nd ex. is not correct.... Becoz if object is placed at focus in concave mirror then image is formed at infinity.....

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G K 7 years, 2 months ago

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Trashti Gupta 7 years, 2 months ago

Yes the following condition can be possible in the case of plane mirror and when the object is placed at focus of a concave mirror

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According to newton second law F=ma Or M=F\A But if speed is constant Then M=not defined Which is not possible

Posted by Mukul Bansal 7 years, 2 months ago

CBSE > Class 12 > Physics

0 answers

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a positive charge is moving towards the obeserver then what will the direction of motion

Posted by Pp Shukla 7 years, 2 months ago

CBSE > Class 12 > Physics

1 answers

Bhushan Saini 7 years, 2 months ago

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ANSWER

Why electric field lines do not intersect each other

Posted by Shubham Jangra 7 years, 2 months ago

CBSE > Class 12 > Physics

3 answers

Shivam Lodhi 7 years, 2 months ago

The tanjant drawn in electric field is gives the direction of electic field at that time electric field intersect each other it gives two direction of electric field but we know that it is not possible thats why electric field lines do not intersect each other

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Pp Shukla 7 years, 2 months ago

electric field lines do not intersect each other. if they do so then at the point of intersection two tangents will drwan which would mean two directions of the force at that point and which is completly impossible..

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G K 7 years, 2 months ago

becoz at any point there is only one direction of field.....but if they cross❌there will be 2 EF.... Thats why they never cross each other.... :-)

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The topic "Rainbow" is the part of optics or not

Posted by Bhajan S 7 years, 2 months ago

CBSE > Class 12 > Physics