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Sharat Raj 8 years ago

Potential diff b/w any 2 Points on the potentiometer wire is directly proportional to its effective length provided that current and area of cross section remains const.

ANSWER

Can I get a original blue print of physics I have searched many times but every time it is showing different

Posted by Pranjal Singh 8 years ago

CBSE > Class 12 > Physics

2 answers

Namami Shukla 8 years ago

Electrostatics:8 Current electricity:7 Magnetism:8 Electromagnetic induction & ac:8 Em waves:3 Optics:14 Dual nature....:4 Atoms & nuclei:6 Semiconductors...:7 Communication....:5

Namami Shukla 8 years ago

Search it on cbse.nic.in

ANSWER

Will paper be according to marks weightage given chapterwise or random weightage from diferent chapters???

Posted by Chetan Taneja 8 years ago

CBSE > Class 12 > Physics

2 answers

Namami Shukla 8 years ago

Only certain chapters are appointed independent marks distribution for eg current electricity of 7 mrks.....

Namami Shukla 8 years ago

Firstly cbse has given marks distribution unit wise and not chapter wise so they'll ask questions according to that only you cant predict that total _ mrks question will come from a particular chapter for eg acc. to cbse blueprint marks distribution for unit electrostatic is 8 so you cant claim cbse if they'll give all 8 mrks question from electric charges or all 8 mrks from capacitors........

ANSWER

A no of identical cells of emfE and internal resistance

Posted by Deepak Kansotia 8 years ago

CBSE > Class 12 > Physics

1 answers

Namami Shukla 8 years ago

What?? Complete the question

ANSWER

Why for TV transmission bandwidth is narrow

Posted by Milind Kardam 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Why is zener diode operated in reverse bias?

Posted by Rohan Rohan 8 years ago

CBSE > Class 12 > Physics

2 answers

Anant Sharma 8 years ago

Because forward bias provide high reaistance so in order to follow low resistance path it can be operated in reverse bias

Aarni Handoo 8 years ago

To keep voltage constant :|

ANSWER

How does the width of the depletion layer of a p-n junction diode change with decrease in reverse bias?

Posted by Shilpi Siddhant 8 years ago

CBSE > Class 12 > Physics

2 answers

Namami Shukla 8 years ago

Width of depletion region will increase in reverse bias

Yuthika Yadav 8 years ago

With decrease in reverse biasing the width of depletion layer decrease and hence the resistance also decrease

ANSWER

1or2 which one will be easy to understand

Posted by Kristina Sarang 8 years ago

CBSE > Class 12 > Physics

2 answers

Namami Shukla 8 years ago

Yes.....1 is easy as compared to 2?

Mehak Munjal 8 years ago

Its 1

ANSWER

Which one is more time consuming unit1or2

Posted by Kristina Sarang 8 years ago

CBSE > Class 12 > Physics

2 answers

Navneet Kumar 8 years ago

Preeti Kranti 8 years ago

ANSWER

How i can know that how much market Q is coming from which chapter

Posted by Vikahs Jaat 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

A perfect self inductor when connected to an a.c source does not produce heating effect yet reduces the current in the circuit.Explain.

Posted by Kushank Singh 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Which one will be easier to understand between unit3 and 4

Posted by Kristina Sarang 8 years ago

CBSE > Class 12 > Physics

5 answers

Navneet Kumar 8 years ago

Ofcourse 3 but unit 3 is time consuming

Sunaina Malik 8 years ago

Obviously 3

Kajal Bhardwaj 8 years ago

Kristina Sarang 8 years ago

But unit3 is very large

Hero Time 8 years ago

Ofcourse 3

ANSWER

Which one will take much time to complete between unit3 and 4

Posted by Kristina Sarang 8 years ago

CBSE > Class 12 > Physics

5 answers

Surbhi Raghu 8 years ago

Navneet Kumar 8 years ago

Obviously 3

Kristina Sarang 8 years ago

Anyone

Piyush K 8 years ago

Vikahs Jaat 8 years ago

It's 3

ANSWER

Important topics of semi conductor

Posted by Pranay Jangid 8 years ago

CBSE > Class 12 > Physics

3 answers

Navneet Kumar 8 years ago

Zener diode as a half wave rectifier and full wave rectifier

Divyanshi Singh 8 years ago

Full wave and half wave rectifier, logic gates

Piyush K 8 years ago

Common emitter transistors

ANSWER

Aap sab kitne baaje tak padhoge

Posted by Piyush K 8 years ago

CBSE > Class 12 > Physics

1 answers

Hero Time 8 years ago

10:19

ANSWER

It is given that capacitors do not work with dc input-- in alternating current chapter class 12 cert phy. But.... in a previous chapter we learn about capacitors circuits with dc input. How is this possible?

Posted by Swathi Sri 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Draw the circuit diagram transistor used as oscillator?

Posted by Chn Bi 8 years ago

CBSE > Class 12 > Physics

2 answers

Piyush K 8 years ago

Chn bhai ye topic ab CBSE syllabus mein nhi hai

3Thank You

Kristina Sarang 8 years ago

It is deleted from the syllabus

ANSWER

Draw thecircuit disgram transistor used as aseillator

Posted by Chn Bi 8 years ago

CBSE > Class 12 > Physics

1 answers

Hero Time 8 years ago

Here

ANSWER

Define electric flux.

Posted by Aina Perme 8 years ago

CBSE > Class 12 > Physics

3 answers

Ishu Chouhan 8 years ago

The total electric lines of forces passing through the closed surface normally called electric flux

Sonakshi Handoo 8 years ago

It is the measure of the flow of electric field lines passing through any area normally.

Ishu Chouhan 8 years ago

The total electric lines of forces passing through closed surface normally called electric flux

3Thank You

ANSWER

why electric flux is independent of size and shape

Posted by Vishwas Dang 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Define band pass filter

Posted by Akash Sonar 8 years ago

CBSE > Class 12 > Physics

3 answers

Ishu Chouhan 8 years ago

A device that allows signals between two specific frequencies to pass .

Ishu Chouhan 8 years ago

Sorry define bola tha wait...

Ishu Chouhan 8 years ago

It is used to reject dc and unwanted sinusoidal wave and give amplified modulated wave

3Thank You

ANSWER

How does the fridge width in young double slit experiment change when the distance of separation between the slits and screen is doubled?

Posted by Gagan Bhullar 8 years ago

CBSE > Class 12 > Physics

1 answers

Aarti No 8 years ago

using formula beta = XD/d $ D ' = 2D Therefore BETA '=2beta

ANSWER

Current is passed from a battery having negligible internal resistance through two resistors 12 kilo ohm and 24 kilo ohm in series. An accurate voltmeter of resistance 12 kilo ohm reads 4.8 V when joined across 24 kilo ohm resistor. What is the emf of the battery and what would the voltmeter read if joined across 12 kilo ohm resistor?

Posted by Sarvesh Goyal 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is amber?

Posted by Puja Kumari 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Derive for axial equitorial

Posted by Ashish Shukla 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Plss tell me important topics of unit atoms and nuclei please please plsss

Posted by Sezal Gvps 8 years ago

CBSE > Class 12 > Physics

1 answers

Ishu Chouhan 8 years ago

Geiger marsdon experiment,impact parameter Bohr's postulate ,mass defect nuclear force its properties and graph,properties of alpha beta Gamma,soddys law ,half hife period,activity of a radioactive substance