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What is zener diode?

Posted by Suyash Kurya 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Ananya Sangwan 8 years, 1 month ago

Zener diode is diode which work on principle of reverse biasing safely ( without damaging)

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What is zener

Posted by Suyash Kurya 8 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

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Cyclotron application

Posted by Avinash Singh 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Prashant Shukla 8 years, 1 month ago

To accelerate charged particles or say positively charged particle

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Why we use laminated core in transformer

Posted by Jatin Kumar 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Prashant Shukla 8 years, 1 month ago

To avoid eddy current

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What is ac?

Posted by Vishal Pandey 8 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Dhruv Aggarwal 8 years, 1 month ago

Alternating current.That means the current which changes continuosly with the time. Examples: The voltage that we receive at our homes in india is an ac voltage at 220V.

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Jatin Kumar 8 years, 1 month ago

AC is an current

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If we double the length of a conductor, then what is the value of new Resistance??

Posted by Nitesh Thakur 8 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Nitesh Thakur 8 years, 1 month ago

It will be 4 times

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Lekha Raj 8 years, 1 month ago

Resistance will be double the original one.....

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Bharat Bhushan 8 years, 1 month ago

Resistance will be 4 times the original ones

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Linear magnification

Posted by Anmol Yadav 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Dhruv Aggarwal 8 years, 1 month ago

m=height of image/height of object.

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Which sample paper is better for board sample paper (i) arihant (ii) oswaal

Posted by Mahima Gautam 8 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Sumit Tomar 8 years, 1 month ago

Arihant!.... Nothing like best from this book..

1Thank You

Sachin Sharma 8 years, 1 month ago

Arihant is the best for study Of board prepration

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What is Polaroid

Posted by Tarachand Meshram 8 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Prashant Shukla 8 years, 1 month ago

Polaroid change ordinary light into plane polarised light . Ex- tourmaline crystal which is used to make sunglasses wind screens of cars etc.

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Mansi Kaushal 8 years, 1 month ago

Polarising sun glasses are called Polaroids.

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Deduce the relationship between real and apparant depth

Posted by Ashish Kashyap 8 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Prashant Shukla 8 years, 1 month ago

Apparent depth = 3/4 real depth

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Deepak Kumar 8 years, 1 month ago

The real depth is the actual depth of a substance....and in simple words apparent depth is the unreal depth...the apparent depth seems to be less or more dipper thn the actual depth due to a phenomena called refraction...for example place a coin under a glass and look inside the glass ...the coin would be visible at its actual depth but when water is poured into the glass the coin seems to be raised frm its position which is called apparent depth...due to refraction.....hope ur doubt is cleared frnd....have a nice day buddy?????

3Thank You

Uttam Thakur 8 years, 1 month ago

real depth /apparent depth

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Mobility of charge

Posted by Aagam Jain 8 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

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What is polarised light

Posted by Shivam Yadav 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Prashant Shukla 8 years, 1 month ago

When the vibrations of an ordinary light are ristricted in a plane perpendicular to the propagation of light then that light is called polarised light.

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How photodiode used in forward bias

Posted by Vaishnavi Panigrahy 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Prashant Shukla 8 years, 1 month ago

When light (photon) falls on the Pn junction, the energy is imparted by the photons to the atoms in the junction . this will creat more free electrons . these free electrons will increase the reverse current .

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Why sun light cannot be stored as light energy only?

Posted by Vaishnavi Kumari 8 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

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What is the si unit of potential gradient?

Posted by Pranav Kairwar 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Sandhya Shree 8 years, 1 month ago

volts per meter

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effective.resistance.of.3para

Posted by Monu Sing 8 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

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CBSE pattern clear about that.

Posted by Ashish Singh 8 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

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Difference between information, message, signal

Posted by Abc Xyz 8 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

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Where are semiconductors used in logic gates???

Posted by Tanmay Joshu 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Sandhya Shree 8 years, 1 month ago

like chips, computer .............

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What is use of gaussion surface

Posted by Nishant Kumar 8 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

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State gauss's theorem in electrostatic

Posted by Pooja Verma 8 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

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What is Corona discharge.?

Posted by Vaibhav Mishra 8 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Jaya Shanti 8 years, 1 month ago

A corona discharge is an electrical discharge brought on by the ionization of a fluid such as air surrounding a conductor that is electrically charged. Spontaneous corona discharges occur naturally in high-voltage systems unless care is taken to limit the electric field strength. A corona will occur when the strength (potential gradient) of the electric field around a conductor is high enough to form a conductive region, but not high enough to cause electrical breakdown or arcing to nearby objects. It is often seen as a bluish (or other color) glow in the air adjacent to pointed metal conductors carrying high voltages, and emits light by the same property as a gas discharge lamp.

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What is difference between pascal and raow

Posted by Vats Ji Mishra 8 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

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What is end error ?

Posted by Raju Sharma 8 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

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What is end error

Posted by Raju Sharma 8 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

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Derive an expression for the electric field at a point on the axial position of an electric dipole

Posted by Mukesh Verma 8 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

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Explain white color of clouds

Posted by Upu Malhi 8 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Shubham Parihar 8 years, 1 month ago

A particle can scatter only that light whose wavelength is greater than its size.Since clouds contains water drops and other particles, having size way more larger than wavelength of any visible light wave due to which they scatter every colour equally

1Thank You

Nitu Singh 8 years, 1 month ago

Due to scattering of color

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A.C. Circuits WHY IS SMALL Q (QUALITY FACTOR) PREFERRED FOR ELECTRIC CIRCUITS AND LARGE Q FOR ELECTRONIC CIRCUITS??

Posted by Bhavya Chopra 8 years, 1 month ago

CBSE > Class 12 > Physics