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

Because it is the one of the characteristic of equipotential surfure value of work done in equipotential surfuce is zero because the theta is 90 and cos 90= 0

1Thank You

ANSWER

Lense maker formulla

Posted by Sunit Singh 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Capacitance of parallel plate capacitor when a dielectric slab of constant K is introduced between the plates of capacitor??????

Posted by Kriti Sharma 6 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Rajat Naik 6 years, 1 month ago

C = KAabsolnot/d

0Thank You

Surya Singh 6 years, 1 month ago

K times of capacitance in vaccum if dielectric is completely filled

0Thank You

ANSWER

Briefly explain the principle of a capacitor and derive an expression for the capacitance of parallel plate capacitor whose plates are separated by a dielectric medium please please please answer???????

Posted by Kriti Sharma 6 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Rajat Naik 6 years, 1 month ago

C = a absolnot /d -t +t/k

0Thank You

Deepak Kumar 6 years, 1 month ago

Ye derivation h...isme kese likh sakte h... and image ka option nhi h

2Thank You

ANSWER

What do you understand by the statement 'liht from the sun is unpolarised? Explain, how does sunlight gets polarised by the process of scattering?.......Answer plaese??

Posted by Tarang Banjare? 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Rajat Naik 6 years, 1 month ago

Unpolarised meaning non polar light when we put the light in poloroid it converts the non polar light into polar light this process is known as polarisation where final intenaity is equal to I2=i0/2cossquare fie

1Thank You

Surya Singh 6 years, 1 month ago

Light from sun is polarized means it vibrate in all plane. And it get polarized when incident on particals and observed by an angle of 90°

1Thank You

Raman Verma 6 years, 1 month ago

Unpolarised means mix with many Colors......after getting scattered it remain in single form or polarized light...

1Thank You

ANSWER

The wavelength of light from the spectral emission line of sodium is 590nm. Find the kimetic energy at which the electrond would have the samw de broglie wavelength

Posted by Sarvesh Gupta 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

A charge rod p attracts rod R where's as p repel another charge rod Q what type of force is developed between q and r

Posted by Abhisek Shukla 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Questions from chapter one that your teachers put in your pre boards??????????????????????????.

Posted by Kriti Sharma 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

.... .... 6 years, 1 month ago

Principal of superposition ,dual,atom,nuclei

0Thank You

ANSWER

Bhai transistor se related topics like transistor as amplifier,yeh saare htt gye ?

Posted by Gunjan Mishra 6 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Rajat Naik 6 years, 1 month ago

Logic gates are also out of syallbus

2Thank You

Aryaman Singh 6 years, 1 month ago

Bhai transistor pura httt gaya

2Thank You

ANSWER

Energy diagram for conductor insulator and semiconductor?

Posted by Barath Sanjay 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

On inserting a dilectric of dilectric constant k will there be any change in the enegy density if the original energy density is y.??

Posted by Avantika Tayal 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Sarthak Vats 6 years, 1 month ago

Yes... It becomes k y

0Thank You

ANSWER

If I will Attempt All question and Write Related to the topic Asked in Question Will I Get Passed??

Posted by Kartikeyp83 Pandey 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

Abhinav Jha 6 years, 1 month ago

1Thank You

Shruti Baheti 6 years, 1 month ago

Will depend on your luck?

0Thank You

Krishna Kumar 6 years, 1 month ago

How does angle of dip charge as line goes from magnetic pole to magnetic equator of the earth

5Thank You

ANSWER

Positron

Posted by Naresh Jaglan 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Weightage of derivation

Posted by Aayush Garg 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Surya Singh 6 years, 1 month ago

Near about 12 marks

1Thank You

ANSWER

Filter circuit in semi conductor h kya syllabus mein bhai?

Posted by Gunjan Mishra 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Aditya Tripathi 6 years, 1 month ago

Haaa

0Thank You

ANSWER

Syllabus me only astronomical telescope hai kya, not others (terrestrial, reflecting,cassegrain)..???

Posted by Rajat Barwar 6 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Shreejit Jayaprasad 6 years, 1 month ago

Yes there's only astronomical telescope in syllabus.. Since cassegrain is also given in ncert it too can be asked in boards so don't take a risk and study it too

2Thank You

Rajat Barwar 6 years, 1 month ago

I have done them also but confirm karna hai,last time revision ke liye??

0Thank You

ANSWER

Important question of physics

Posted by Jt Techinical 6 years, 1 month ago

CBSE > Class 12 > Physics

4 answers

Naina20 Tiwari 6 years, 1 month ago

Rectifier (full wave and half wave),hysterisis loop , forward n reverse bais ,cyclotron, eletric field due to dipole at axial and equtorial line ,gauss therom and its application , bio - savart law ,amper circuitial law and its application ,meter bridge,potentiometer ,wheat stone bridge ac genrator ,eddy current ,lenz law , faraday law ,LCR circuit ,lens and lens maker formula ,hygens principle , einstien eq. , Davission and germer exp. ,Bohr posulates ,half life , zenor diode

0Thank You

Jt Techinical 6 years, 1 month ago

Ac dynamo

0Thank You

Jt Techinical 6 years, 1 month ago

Pn junction

0Thank You

Jt Techinical 6 years, 1 month ago

Cyclotron kr le bro

1Thank You

ANSWER

Imp questions bata do ..plz

Posted by Devesh Kumar 6 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Tarang Banjare? 6 years, 1 month ago

Solve sample papers or last year papers......?

0Thank You

ANSWER

Give relationship btw the charges induced in a coil when rotated in B from o to 90

Posted by Bennita Sara Roys 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

Weightage of numericals?

Posted by Archit Nangla 6 years, 1 month ago

CBSE > Class 12 > Physics

3 answers

User 123 6 years, 1 month ago

How many numericals can be asked??

0Thank You

Manjay Jha 6 years, 1 month ago

12 to 15 marks only

0Thank You

Sheetal Sahoo 6 years, 1 month ago

around 21

0Thank You

ANSWER

Any one from lucknow?

Posted by Pushkar Gupta 6 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

ANSWER

When a plane wavefront is incident on a concave mirror the reflected wave front spherical shape why?

Posted by Muskaan Vig 6 years, 1 month ago

CBSE > Class 12 > Physics

4 answers

Rajat Barwar 6 years, 1 month ago

All the incident lines reflect back towards focus hence the structure perpendicular to all these are spheres with focus as centre.

2Thank You

Muskaan Vig 6 years, 1 month ago

Moving coil galvanometer..It is based on principle that when a current carrying loop is placed in magnetic field (perpendicular to its direction) it experiences torque and rotates which gives deflection.......

1Thank You

Laa Tungma 6 years, 1 month ago

Moving coil galvanometer

0Thank You

Nandini Tamrakar 6 years, 1 month ago

Because wavefront is the locus of all pointthat contains and perpendicular

2Thank You

ANSWER

Sb kaise pdh rhe ho...by notes ya videos

Posted by Shalini Singh 6 years, 1 month ago

CBSE > Class 12 > Physics