CBSE > Class 12 > Physics | CBSE Board | Homework Help

No.....the person should get atleast 33 mrks in theory ...according to cbse a student should pass in theory and practical separately than only he/she will be considered as passed

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Benedict Sabu 8 years ago

C'mon dont panic. Try you will get higher marks. I think the pass mark is 40. Not sure

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If Columbus law had 1/r3 dependence instead of 1/r2,would Gauss's theorm had been still valid?

Posted by Astha Kaushik 8 years ago

CBSE > Class 12 > Physics

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A plane mirror is placed at a distance 40 cm from a concave mirror .A candle is placed in the middle of the two mirror.if the image formed by botb the mirror coincide .Calculate the radius of curvature of the concave mirror.

Posted by Himanshu Kumar 8 years ago

CBSE > Class 12 > Physics

4 answers

Himanshu Kumar 8 years ago

60cm kida aya

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Himanshu Kumar 8 years ago

with diagram

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Himanshu Kumar 8 years ago

plz give me full solution of this numerical

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Ananthakrishnan J 8 years ago

-60cm

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how many types of telescope

Posted by Hunny Tomar 8 years ago

CBSE > Class 12 > Physics

1 answers

Chikane Jayesh 8 years ago

There are two types of telescope 1.refracting 2.reflecting

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The principle on which a transistor-amplifier works as an oscillator

Posted by Rhitika Rai 8 years ago

CBSE > Class 12 > Physics

2 answers

Rhitika Rai 8 years ago

Oh ya thanks

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Namami Shukla 8 years ago

Transistor as amplifier hai course mein but transistor as oscillator has been deleted from cbse syllabus

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What is potentiometers explain briefly?

Posted by Utsav Joshi 8 years ago

CBSE > Class 12 > Physics

0 answers

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How can we show that EM waves carry momentum?

Posted by Sai Thaini 8 years ago

CBSE > Class 12 > Physics

1 answers

Rochie Joshi 8 years ago

Photoelectric effect

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Geiger-marsden experiment for alpha particle scattering in chapter atom and nuclei is in course or not

Posted by Anurag Bhatt 8 years ago

CBSE > Class 12 > Physics

2 answers

Priya Prakash S 8 years ago

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Benedict Sabu 8 years ago

Yes

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Industrial action

Posted by Sikha Mahato 8 years ago

CBSE > Class 12 > Physics

2 answers

Yuthika Yadav 8 years ago

Sorry galat jagah type ho gya

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Yuthika Yadav 8 years ago

1/f=n2-n1/n1 ×1/R1 -1/R2

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lens makers formul

Posted by Aulakh Aulakh 8 years ago

CBSE > Class 12 > Physics

1 answers

Yuthika Yadav 8 years ago

1/f= n2--n1/n1 ×1/R1--1/R2

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An alernating source of voltage is applied to a RC series circut find the phase relationship between current and voltage

Posted by Rajni Bala 8 years ago

CBSE > Class 12 > Physics

0 answers

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npn transistor

Posted by Sana Sayeed 8 years ago

CBSE > Class 12 > Physics

1 answers

Ravi Rathi 8 years ago

Reverse bias

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Show that force between two plates of parallel plate capacitor is 1/2.Q.E and explain the origin of factor 1/2.

Posted by Vivek Ahirwar 8 years ago

CBSE > Class 12 > Physics

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What is sidebands

Posted by Vaishnavi Patil 8 years ago

CBSE > Class 12 > Physics

1 answers

Ayushi Tiwari 8 years ago

2 frequency bands either side of career wave or which contain the modulated signals

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Give definition of unit charge using coulomb 'S law.

Posted by Yash Mishra 8 years ago

CBSE > Class 12 > Physics

0 answers

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Which phenomenon show the quantum nature of the electromagnetic radiation

Posted by Sahil Tiwari 8 years ago

CBSE > Class 12 > Physics

1 answers

Ayushi Tiwari 8 years ago

Photoelectric effect

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A capacitor of 50microfarad,resistor of 10ohm and an inductor L are in series with an a.c source of frequency 50hz. Calculate the value of L if the angle between current and voltage is zero

Posted by Kamal Khajuria 8 years ago

CBSE > Class 12 > Physics

0 answers

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The electric field in the region is equal to 2xi^ find the net electric field through cube and charge enclosed by it.

Posted by Ayushi Tiwari 8 years ago

CBSE > Class 12 > Physics

1 answers

Ayushi Tiwari 8 years ago

Kisi ko iska ans pata h

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Valance band

Posted by Dhiraj Sonkusare 8 years ago

CBSE > Class 12 > Physics

1 answers

Vaishnavi Patil 8 years ago

It is the lowest energy band

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Numericals generally kn se chapters se aati h or formula based h saare ya hots v ?

Posted by Akash Agarwal 8 years ago

CBSE > Class 12 > Physics

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what should be the width of each slit in order to obtain10 maxima of the double silts pattren within the central maxima of the slit pattren

Posted by Anju Sharma 8 years ago

CBSE > Class 12 > Physics

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Paper style

Posted by Sukh Dhillon 8 years ago

CBSE > Class 12 > Physics

0 answers

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Calculate the number of fringes displaced when a thin sheet of refractive index ‘n’ and thickness ‘t’ is introduced in the path of one of the interfering rays.

Posted by Yuthika Yadav 8 years ago

CBSE > Class 12 > Physics

0 answers

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Explain why electric lines are perpendicular to charged surface.

Posted by Manas Jain 8 years ago

CBSE > Class 12 > Physics

1 answers

Yuthika Yadav 8 years ago

If they are not perpendicular then there will be a component along surface of conductor which exert a force on free electrons and current will start flowing but it is not possible, with connecting a source

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Ab initio method for lens maker's formula is necessary or not

Posted by Kajal Bhardwaj 8 years ago

CBSE > Class 12 > Physics