Recent content by Shreya

Thanks @haruspex !

Angular magnification is defined as ratio of the angle subtended at the eye when viewed through the device (microscope) to the angle subtended by the object when kept at least distance of distinct vision - D {without the device}

Oh Okay. But, is it okay to multiply linear magnification with angular? What magnification does it give us then?

I just used Samsung Notes to draw it

I tried deriving the angular magnification of eyepiece & this is what I got. ## m_\theta = \frac {h}{u} * \frac {D} {h} ## Taking v as ##f_0 + L## from the diagram, I calculated u. ## m_\theta = - \frac{DL} {f_0 (f_0 +L)}## Please verify my calculations and kindly point out my mistakes.

I will check on that. Thanks for pointing it out! That's true! Will do that from next time. Thanks a million @BvU. Your suggestions really helped me figure out the issue.

Thanks @nasu. That makes sense.

Wait a minute, now that i think about it, the moving coil galvanometer must have had some inductance, right? That must be the reason of my higher value of calculated inductance

Those images are a galvanometer (with 100 ohms resistance), my inductor (with 2.3 ohm resistance) and the ac source (which had 50 ohm resistance). I am sorry, i accidentally wrote the wrong resistances, i will edit the image. Also here is my calculations. Hope this is better. Thank you for...

Sorry for that, I have edited my question. Also here is a pic of my homemade inductor.

From the graph below of voltage across resistor vs. source frequency, it can be seen that resonance is obtained at 828Hz. But, on calculating the inductance of my inductor (homemade) using ##\frac {1}{(2\pi f)^2C}##, I got 7.9mH. But this is greater than the inductance of the solenoid calculated...

Wow! Thank you so much, @TSny and @pasmith. I got it, now! I love electromagnetism and this awesome community 👏

@pasmith, thank you so much for the answer. I understood your reply except the last statement. Could you please explain this? Could you explain how a changing magnetic field, creates a change electric field and that creates a changing magnetic field and so one. I thought that every time you...

As accelerated charges produces time varying electric field which produces time varying magnetic fields and so on. I know there is something wrong with my argument, I can't point it out. Please be kind to help.

Thank you so much @haruspex for helping me out again. I had tried many resources to understand this question and all that had failed. You are doing a great help to all students in the world