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

And ke liye If x is 1 y is 1 then output will be 1 If x is 1 y is 0 then output will be 0 X is 0 y is 1 then output is 0 x is 0 y is 0 then output is 0 Isme x.y=output

1Thank You

Namami Shukla 8 years ago

Ncert mein given hai

1Thank You

Lalit Maan 8 years ago

Ya konise table ha ?

0Thank You

ANSWER

The TV transmission tower at a particular station has a height of 160m 1 what it's coverage range 2 how much population is covered by the transmission is the average density around the tower 1200km 3 by how much should the height be increased to double it's coverage range given radius of the earth 6400km

Posted by Abhishek Sharms 8 years ago

CBSE > Class 12 > Physics

1 answers

Madiha Faraz 8 years ago

Using formula √2Rht+√2Rhr

0Thank You

ANSWER

Good morning friends aj subhhe to hui par ham logo k liye andhera hi h kyo ki all students are busy in study good luck friends

Posted by Shivanshu Yadav 8 years ago

CBSE > Class 12 > Physics

2 answers

Jass Mangla 8 years ago

It u too*

0Thank You

Jass Mangla 8 years ago

Gm Uto gd luck ??

0Thank You

ANSWER

Waveloft

Posted by Shubh Nagar 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Conductance

Posted by Shubh Nagar 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is the frequency of visible waves???

Posted by Nishant Tomar 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

What is cyclotrom

Posted by Prashant Singh 8 years ago

CBSE > Class 12 > Physics

3 answers

Lalit Maan 8 years ago

an apparatus in which charged atomic and subatomic particles are accelerated by an alternating electric field while following an outward spiral or circular path in a magnetic field.......now cycle + drum = cyclotron

0Thank You

Nishant Tomar 8 years ago

It is a device which is used to accelerate positive charge particles

0Thank You

Baani N 8 years ago

It is a device which can accelerate the positive charge particle upto to high value

0Thank You

ANSWER

Why soft iron core is placed inside galvanometer

Posted by Ramanjit Kaur 8 years ago

CBSE > Class 12 > Physics

3 answers

Vedita Chaturvedi 8 years ago

The soft iron core increases the strength of magnetic field

1Thank You

Rochie Joshi 8 years ago

Mag.*****

0Thank You

Rochie Joshi 8 years ago

For radial amg. Field.

0Thank You

ANSWER

Why electric field lines perpendicular to a point on an equipotential surface of a conductor

Posted by Madhukar Sharma 8 years ago

CBSE > Class 12 > Physics

2 answers

Debleena Bose 8 years ago

If equipotential surface r not perpndclr then a force will be exerted & if exerted work has to be done,but in equippotential surface fr moving charge no work is done

2Thank You

Shraddha Jangid 8 years ago

Because if it is inclined at some angle then it will have Two component ll and prd. To it and in electrostatics there is no parallel component because charges are at rest and the work done in taking a unit charge from one point to another on euipotential surface will not be equal to 0 if it will have a parallel component because cos0 is 1

1Thank You

ANSWER

is solving sample paper is imp??

Posted by Nancy Rana 8 years ago

CBSE > Class 12 > Physics

2 answers

Vedita Chaturvedi 8 years ago

Yes

0Thank You

Aditya Raj 8 years ago

1Thank You

ANSWER

Give two limitations & two advantages of AM modulation??

Posted by Muthu Lakshmi 8 years ago

CBSE > Class 12 > Physics

1 answers

Lalit Maan 8 years ago

What to do for passing physics exam?

2Thank You

ANSWER

Yaar previous year k soln. Kha milenge

Posted by Sweety Sharma 8 years ago

CBSE > Class 12 > Physics

4 answers

Sweety Sharma 8 years ago

Thanx

0Thank You

Aditya Raj 8 years ago

Issi me subject ke andar hai

0Thank You

Rahul Poonia 8 years ago

Play store pr se ek app install kro solved question paper

0Thank You

Pooja Kaswan 8 years ago

Meritnation pe

0Thank You

ANSWER

Pn junction diod

Posted by Shivanshu Yadav 8 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

passing marrk topic bta do

Posted by Tarun Hyanki 8 years ago

CBSE > Class 12 > Physics

1 answers

Khurshid Ahmad 8 years ago

You can prepare some topic which cover much... Semiconductor, communication, electromagnetic wave, earth magnetism, and one more chapter which you know well... By doing this you can get about 30 marks.....

2Thank You

ANSWER

Difference b/w length and dipole of antena ?

Posted by Saurabh Yadav 8 years ago

CBSE > Class 12 > Physics

1 answers

Dolly Singh 8 years ago

Paper mai nakal maar liyo

0Thank You

ANSWER

Define junction diode as detected?

Posted by Saurabh Yadav 8 years ago

CBSE > Class 12 > Physics

1 answers

Dolly Singh 8 years ago

Gbsss badli

2Thank You

ANSWER

Define junction diode as detecter?

Posted by Saurabh Yadav 8 years ago

CBSE > Class 12 > Physics

2 answers

Shivanshu Yadav 8 years ago

???

0Thank You

Dolly Singh 8 years ago

Gbsss badli

1Thank You

ANSWER

Imporatant topic related to board exam

Posted by Himani Rani 8 years ago

CBSE > Class 12 > Physics

2 answers

Aditya Raj 8 years ago

Moving coil galvanometre

0Thank You

Lalit Maan 8 years ago

Gauss theorem

1Thank You

ANSWER

What is dead bit galvanometer?

Posted by Sahiba Bhayana 8 years ago

CBSE > Class 12 > Physics

1 answers

Naresh Vishwakarma 8 years ago

When current is passed through a galvanometer, the coil oscillates about its mean position before coming to rest. To bring the coil to rest immediately, the coil is wound on a metallic frame. Now, when the coil oscillates, eddy currents are set up in a metallic frame, which opposes further oscillations of the coil. This inturn enables the coil to attain its equilibrium position almost instantly. Since the oscillations of the coil die out instantaneously, the galvanometer is called dead beat galvanometer.

1Thank You

ANSWER

What is the phase difference between electric and magnetic field vectors in an em wave?

Posted by Naresh Vishwakarma 8 years ago

CBSE > Class 12 > Physics

1 answers

Shraddha Jangid 8 years ago

0Thank You

ANSWER

Demodulation what is it

Posted by Anisha Chandra 8 years ago

CBSE > Class 12 > Physics

4 answers

Sruthi Sks 8 years ago

The extraction of signal from a high frequency carrier wave is called as demodulation.

0Thank You

Garima Suyal 8 years ago

reversing of AM waves

0Thank You

Sahiba Bhayana 8 years ago

Modulation *

1Thank You

Sahiba Bhayana 8 years ago

The reverse process of modation is demodulation in other words we can say to seperating low freq. message signal from high freq. carrier wave is demodulation..

0Thank You

ANSWER

Why is it necessary to make use of antenna in communication?

Posted by Ankush Mehrania 8 years ago

CBSE > Class 12 > Physics

1 answers

Yuthika Yadav 8 years ago

It convert em waves to electrical signal and vice versa

0Thank You

ANSWER

What is the principle of amplifier?

Posted by Divyansh Gupta 8 years ago

CBSE > Class 12 > Physics

1 answers

Sruthi Sks 8 years ago

Transistor works in the active region..The emitter is forward biased and collector is reverse biased.

2Thank You

ANSWER

Hey gys mujhe unit 2 nhi aata thn wht shld i do now?

Posted by Sahiba Bhayana 8 years ago

CBSE > Class 12 > Physics

4 answers

Sahiba Bhayana 8 years ago

Kirchauff's law to aata h mujhe.

0Thank You

Dimpy Kaur 8 years ago

Us unit m Se impt impt derivation raate maar lo drift velocity, relation between drift velocity nd electric current nd meter bridge nd potentiometer , Kirchof's law bs

0Thank You

Ankush Mehrania 8 years ago

This unit is very much simple.... But it was confusing..... ND also it has limited question which r asked many a times.... So focus on that mainly on 5 marks topic.....

0Thank You

Sahiba Bhayana 8 years ago

Nd mujhe yeh unit samajh bhi nhi aati

2Thank You

ANSWER

Is frequency modulation is important one

Posted by Om Gupta 8 years ago

CBSE > Class 12 > Physics