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 7 years, 6 months 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 7 years, 6 months 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 7 years, 6 months ago

CBSE > Class 12 > Physics

4 answers

Himanshu Kumar 7 years, 6 months ago

60cm kida aya

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Himanshu Kumar 7 years, 6 months ago

with diagram

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Himanshu Kumar 7 years, 6 months ago

plz give me full solution of this numerical

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Ananthakrishnan J 7 years, 6 months ago

-60cm

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how many types of telescope

Posted by Hunny Tomar 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Chikane Jayesh 7 years, 6 months 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 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Rhitika Rai 7 years, 6 months ago

Oh ya thanks

0Thank You

Namami Shukla 7 years, 6 months 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 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

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How can we show that EM waves carry momentum?

Posted by Sai Thaini 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Rochie Joshi 7 years, 6 months 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 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Priya Prakash S 7 years, 6 months ago

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Benedict Sabu 7 years, 6 months ago

Yes

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Industrial action

Posted by Sikha Mahato 7 years, 6 months ago

CBSE > Class 12 > Physics

2 answers

Yuthika Yadav 7 years, 6 months ago

Sorry galat jagah type ho gya

1Thank You

Yuthika Yadav 7 years, 6 months ago

1/f=n2-n1/n1 ×1/R1 -1/R2

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lens makers formul

Posted by Aulakh Aulakh 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Yuthika Yadav 7 years, 6 months 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 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

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npn transistor

Posted by Sana Sayeed 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Ravi Rathi 7 years, 6 months 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 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

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What is sidebands

Posted by Vaishnavi Patil 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Ayushi Tiwari 7 years, 6 months 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 7 years, 6 months 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 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Ayushi Tiwari 7 years, 6 months 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 7 years, 6 months 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 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Ayushi Tiwari 7 years, 6 months ago

Kisi ko iska ans pata h

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Valance band

Posted by Dhiraj Sonkusare 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Vaishnavi Patil 7 years, 6 months 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 7 years, 6 months 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 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Paper style

Posted by Sukh Dhillon 7 years, 6 months 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 7 years, 6 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Explain why electric lines are perpendicular to charged surface.

Posted by Manas Jain 7 years, 6 months ago

CBSE > Class 12 > Physics

1 answers

Yuthika Yadav 7 years, 6 months 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 7 years, 6 months ago

CBSE > Class 12 > Physics