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What is the most common use of photodiode????

Posted by Tapan Pandey?? 6 years ago

CBSE > Class 12 > Physics

4 answers

Nandini Kanwar 6 years ago

For optical signals

Riya Rana 6 years ago

Detection of optical signal and demodulation.

Vashu Yadav 6 years ago

I think demodulation

Vaishnavi Kalvakuntla 6 years ago

Solar cell

ANSWER

Explain the electrostatic shielding!!!??

Posted by Priya Pandey 6 years ago

CBSE > Class 12 > Physics

2 answers

Ritwik Choudhary 6 years ago

Process of protecting a substance from electric field by putting it inside the conductor...... as electric field inside the conductor is 0 ....as whole charge remains outside the surface of conductor....

Vashu Yadav 6 years ago

It is a process of sheilding or protecting a particular are or substance from electric field

ANSWER

Working principal of meter bridge

Posted by Vaibhav Rathore 6 years ago

CBSE > Class 12 > Physics

2 answers

Vaishnavi Kalvakuntla 6 years ago

Wheatstone bridge

Arnav Kandari 6 years ago

The meter bridge principle is based on the Wheatstone Bridge circuit which says that if at any point or length (of a wire), the ratio of two resistances (say R1 and R2) is equal to the ratio of another two resistances (say R3 and R4 where R4 is the unknown resistance)

ANSWER

Does we have to write the solutions of the 1 mark questions Or direct answer??

Posted by Rajat Barwar 6 years ago

CBSE > Class 12 > Physics

1 answers

Arnav Kandari 6 years ago

In MCQ 1 word,in Q&A u could explain.

ANSWER

Which type of radioactive decay changes the elecronic energy levels of atom??

Posted by Rajat Barwar 6 years ago

CBSE > Class 12 > Physics

1 answers

Arnav Kandari 6 years ago

Gamma decay: When an electron changes levels, the energy involved is usually a few eV, so a visible or ultraviolet photon is emitted. In the nucleus, energy differences between levels are much larger, typically a few hundred keV, so the photon emitted is a gamma ray.

ANSWER

Yr phy mein derivatations kitniya hai aur kon kon c imp hai

Posted by Komal Sidhu 6 years ago

CBSE > Class 12 > Physics

1 answers

Vrushab Warude 6 years ago

Derivations toh almost 30+ heh aur imp bhi boht heh specially derivations of magnetism and lens maver formula

ANSWER

Most important questions in 1 to 5 chapters in physics

Posted by Pratham Laller 6 years ago

CBSE > Class 12 > Physics

1 answers

Riya Rana 6 years ago

1 to 5 chapters

ANSWER

Break down region??

Posted by Tapan Pandey?? 6 years ago

CBSE > Class 12 > Physics

1 answers

Riya Rana 6 years ago

The region where the incoming voltage fluctuates above the break down voltage then zener diode pass heavy current and high voltage this is it..

ANSWER

What is ripple factor??????

Posted by Tapan Pandey ?? 6 years ago

CBSE > Class 12 > Physics

1 answers

Rajat Barwar 6 years ago

Its the measure of the effectiveness of the rectifier.....it is the ratio of a.c.(rms) to d.c. value. But thus is not given in ncert. Hope it may help u...

ANSWER

Magenetism

Posted by Sahil Ansari 6 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

I need physics 2018 board exam other two set

Posted by Faizal Sf 6 years ago

CBSE > Class 12 > Physics

2 answers

Pushkar Gupta 6 years ago

No all sets are same in 2018

Killer Xmarty 6 years ago

Ok

ANSWER

Stopping potential depends upon distance of ultraviolet rays???

Posted by Roshan Jha 6 years ago

CBSE > Class 12 > Physics

2 answers

Suraj Kumar 6 years ago

On frequency

Riya Gupta 6 years ago

No

ANSWER

Gifuftxhk

Posted by Deepali Gupta 6 years ago

CBSE > Class 12 > Physics

2 answers

Killer Xmarty 6 years ago

??

Navneet Gupta 6 years ago

Tmkoc

ANSWER

Is there logic gates in the syallibus or not ?

Posted by Amrit Gill 6 years ago

CBSE > Class 12 > Physics

5 answers

Gaihem Kamei 6 years ago

Yes there is..say jai hanuman?

Santosh Kumari 6 years ago

No

Pooja Rawat 6 years ago

Amrit r u from paschim vihar

Pooja Rawat 6 years ago

No

Vashu Yadav 6 years ago

No

ANSWER

Define fatherparadox law

Posted by Mayank Zode 6 years ago

CBSE > Class 12 > Physics

5 answers

Tamanna Sharma 6 years ago

It's a theory regarding time traveling which was proven false with this example of grandfather and grandson

Vashu Yadav 6 years ago

Tamana ye kya tha

Tamanna Sharma 6 years ago

And by the way mayank, physics me ye law kabse puchne lage.???

Tamanna Sharma 6 years ago

It's just a state of thinking of mind that we travel in time back but this cannot be possible at all. ( you goes into the past you kill your grandfather ~ ultimately your father not exsist ~ ultimately you not exsist ) which is impossible at any cost ,so this is only a imaginative thing for us to built up a another world in our mind.

Tevar Jaat 6 years ago

It is not in syllabus

ANSWER

Is doppler effect and law of malus in our syllabus???

Posted by Shefu ??????? 6 years ago

CBSE > Class 12 > Physics

3 answers

Killer Xmarty 6 years ago

Yesss

Aashina Rahman 6 years ago

Law of malus is there but dooppler effect is not there

Muskaan Vig 6 years ago

Law of malus is in our syllabus but doppler effect not ...

ANSWER

Is electric field intensity due to insulated charged solid sphere

Posted by Satyam Singh Chauhan 6 years ago

CBSE > Class 12 > Physics

1 answers

Muskaan Vig 6 years ago

No it is not in our syllabus...

ANSWER

Predict the directiond of induced current in metal ring 1 and 2 lying in the same plane where current I in the wire is increasing steadily

Posted by Shagun Gupta 6 years ago

CBSE > Class 12 > Physics

3 answers

Nikita Beniwal 6 years ago

With increasing current in 1 ring current will be in opposite direction in ring 2

Riya Rana 6 years ago

Without the diagram ...

Tamanna Sharma 6 years ago

Chelsi ,current ki direction to batao matlab upward increasing or downward, tabhi to induced current ki direction bata sakte he. I think in this question there is a diagram given to you which represents this situation but unluckily we don't ??draw diagram here, so try this question by using lenz's law.

ANSWER

Sir physics me derivations & numaricals kitne marks ke ate h

Posted by Vivek Sharms 6 years ago

CBSE > Class 12 > Physics

4 answers

Tapan Pandey?? 6 years ago

? adi is right, and alot of logical questions were their

Adi Kumar 6 years ago

Numerical 10 to 15 marks Derivation 20 to 25

Riya Rana 6 years ago

??

Tamanna Sharma 6 years ago

Paper me jake khud dekh lena , dude sample papers karke abhi tak pta nahi chala

ANSWER

What is the weightage of numericals ?

Posted by Nisha Panwar 6 years ago

CBSE > Class 12 > Physics

1 answers

Adi Kumar 6 years ago

10 to 15 marks

ANSWER

Meaning of planing Dube for hindi

Posted by Krishna Das 6 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Is electrostatic potential is zero at apoint where electric field is zero

Posted by Saurabh Kumar 6 years ago

CBSE > Class 12 > Physics

4 answers

Muskaan Vig 6 years ago

No, it is not necessary where electric field is zero potential also be zero.....Eg.potential become zero b/w equal and opposite charges but electric field does not ......

Tamanna Sharma 6 years ago

E=dV/dr by tis relation if E=o, then potential must be constant (means critical points max and min of a graphical representation)

Anvi Vjbv 6 years ago

Not always necessary

Mohan Singh 6 years ago

Yes

ANSWER

Is electrostatic potential is necessarily zero at a point where electric field is zero

Posted by Saurabh Kumar 6 years ago

CBSE > Class 12 > Physics

2 answers

Anvi Vjbv 6 years ago

Not always necessary as V=3/2KQ/r at centre of hollow sphere but electric firld is 0

Mohan Singh 6 years ago

Yes

ANSWER

Electric field lines can be said to be

Posted by Haider Ali 6 years ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Ge and Ag are cooled to a temperature of 305 k then resistivity

Posted by Honey Patel 6 years ago

CBSE > Class 12 > Physics

1 answers

Tamanna Sharma 6 years ago

Ge resistivity increase and Ag decrease

ANSWER

Physics m passing marks ky h theory m ??

Posted by Annu Sharma 6 years ago

CBSE > Class 12 > Physics

1 answers

Honey Patel 6 years ago

If u r getting 20 plus in internal then try to score 20 plus in 70 marks paper u will be easily pass

ANSWER

Rules to follow while writing board

Posted by D N Singh 6 years ago

CBSE > Class 12 > Physics

1 answers

Shruti Jha 6 years ago

Check it on cbse site. It's there!

ANSWER

is it easy to pass physics exam this year

Posted by #Marvel 3000# 6 years ago

CBSE > Class 12 > Physics

1 answers

Tamanna Sharma 6 years ago

Yes

ANSWER

explanation of refraction on the basis huygens method

Posted by Arpit Thatai 6 years ago

CBSE > Class 12 > Physics

1 answers

Avantika Tayal 6 years ago

c/v=lambda1/lambda2=sini/sinr=refractive index. Light from a distant source produces a planar wavefront. The light bends when enter from one medium to another

ANSWER

Show that the electron revolving around the nucleus in a radius, r with the orbital speed, v has magnetic moment,evr/2

Posted by Kusum Kumari 6 years ago

CBSE > Class 12 > Physics

1 answers

Killer Xmarty 6 years ago

Hllw

ANSWER

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