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Why is ionisation low near the earth and high far from the earth?

Posted by Reet Dua 7 years, 11 months ago

CBSE > Class 12 > Physics

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Cal a charge on one cup of water of mass 12g ?

Posted by Animesh Chandra 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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What is sky wave propagation

Posted by Simran Kumari 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Vishwas Dang 7 years, 11 months ago

These are the type of waves that are radiated by antenna at large angles ,travell upward,then reach the receiving antenna after reflection from ionosphere

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What is the use of gaussain surface??

Posted by Sakshi Verma 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Rishav Thakur 7 years, 11 months ago

To determine especially electric field

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Can i get cbse solved last year question papers for class 12

Posted by Rathod Madhav 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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what is the si unit of kinetic energy

Posted by Kapil Rana 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Varun Singh 7 years, 11 months ago

joule

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Applications of EMI except ac generator

Posted by Mahesh Gautam 7 years, 11 months ago

CBSE > Class 12 > Physics

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Is the sample papers and given importants will b importants in cbse exams

Posted by Ajay Narzary 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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Atmospheric refraction

Posted by Adarsh Singh 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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

Posted by Ankit Malik 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Madhu Shree 7 years, 11 months ago

by bringing A positively charged body near the body which is to be charged

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Name an opto Electonic device

Posted by Sharikh Saifi 7 years, 11 months ago

CBSE > Class 12 > Physics

4 answers

Gautam Kumar 7 years, 11 months ago

Those device in which there is generation of electron hole pair by Light (photon)

0Thank You

Jatin Rastogi 7 years, 11 months ago

Like ldr

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Chesta Mittal 7 years, 11 months ago

Photodiode, led, etc

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Pranjali Mahajan 7 years, 11 months ago

May be the answer will be all optical instruments

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Topics and chapter from which numericals come???

Posted by Lucky Kumar 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Sharikh Saifi 7 years, 11 months ago

1,39 and may be short numerical from 5

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In NPN transistor ,what are current carrier inside and outside the transistor circuit?

Posted by Sachi Katyayni 7 years, 11 months ago

CBSE > Class 12 > Physics

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A signal of 5kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz . What are the frequencies of side bands produced ?

Posted by Riya Rawat 7 years, 11 months ago

CBSE > Class 12 > Physics

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What is atom

Posted by Kshitij Kumar 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Naveen Sharma 7 years, 11 months ago

An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are very small in size.

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What is the application of gauss's Law?

Posted by Rebecca Thingom 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Rahul Agrawal 7 years, 11 months ago

To determine electric flux in a closed surface

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Transistor

Posted by Ronak Meena 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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Write about npn transistor

Posted by Naveen Kumar 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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We do not choose to transmit an audio signal by just directly converting it to an em wave of same frequency? Why

Posted by Muskan Sahu 7 years, 11 months ago

CBSE > Class 12 > Physics

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About Eddy current

Posted by Abuzar Mustquim 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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Define capacitor and capacitance.

Posted by Md Allauddin Ansari 7 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Gunjan Pandey 7 years, 11 months ago

Capacitor is a device to store charge and the charge stored by capacitor is capacitance

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Md Allauddin Ansari 7 years, 11 months ago

A capacitor is a device which is used to store electrostatic potential energy or charge . It comprises of two conductors separated by insulating medium.

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Deduce gauss theoram and coulombs law

Posted by Kumar Abhijeet 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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Will super conductor conduct at normal room temperature???

Posted by Pranjali Mahajan 7 years, 11 months ago

CBSE > Class 12 > Physics

0 answers

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How can I recover most of syllabus in 1 month?

Posted by Mayra Prajapati 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Anvi Singh 7 years, 11 months ago

Divide your time , take more revision

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What are permament magnets? Give one example.

Posted by Nitin Rana 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Pranjali Mahajan 7 years, 11 months ago

Which retain magnetism even after removing from external magnetic field

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Why charge on object not affect by their motion?

Posted by Ankit Dare 7 years, 11 months ago

CBSE > Class 12 > Physics

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Forward and reverse biasing in detail

Posted by Killer Suhail 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Pranjali Mahajan 7 years, 11 months ago

In forward biasing p type is connected to positive terminal of battery and n type to negative. The electrons move from n type to p type and holes from p type to n type. This movement produces depletion layer with less thickness which initiates the conductivity. In reverse its exactly opposite. The thickness of depletion layer is very large due to which conduction is not possible.

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For the same value of angle of incident,the angles of refraction in three media A, B and C are 15°,25°and 35° respectively. In which medium , would the velocity of light be minimum

Posted by Riya Srivastava 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Pranjali Mahajan 7 years, 11 months ago

Is the answer c??

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In hydrogen atom the electron revolves round the nucleus with velocity of 2.2×10^6 m/sec. The radius of the orbit is 0.53Å. calculate the equivalent magnetic moment.

Posted by Nikhilesh Sirohi 7 years, 11 months ago

CBSE > Class 12 > Physics

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Parllel playe capostor

Posted by Meenu Meenu 7 years, 11 months ago

CBSE > Class 12 > Physics

1 answers

Prince Soni 7 years, 11 months ago

Two plate are placed at a distance dcm one plate has +ve charge and 1 plate have _ve charge is connected to earth which supply +ve charge to plate each of area A both plate supply charges one plate to another this is called parallel plate capacitor.

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