# Search results

1. ### Sex linked diseases and lyonization in females

Suppose, there's a disease "D", which is an X-linked, dominant disease. Now, there's a female who possesses the allele for this disease in one of her two X chromosomes. (XDX) It's easy to say that since the allele for the disease is dominant, she'll suffer from it. Now, it's a well known fact...
2. ### Course of the Optic Nerve

We had a class on optic nerve today. Our teacher said that the optic nerve "originates" from the retina, and continues up till the commencement of the optic chiasma, and is, approximately, 4 cm long. My question is, Why is it considered to be a cranial nerve when it does not even originate...
3. ### Question related to molarity

No. I'm in high school. So, I don't know much about that. What specific situations are you talking about? .
4. ### Question related to molarity

Ammonia gas is passed into water, yielding a solution of density 0.93 g/cm^3 and containing 18.6% NH3 by weight. The mass of NH3 per cc of the solution is 1) 0.17 2) 0.51 3) 0.34 4) 0.68 I solved it using the molarity equation. Molarity = 10xd/MM where, x - % by weight d - density MM -...
5. ### Convex lenses

Ahh! I got it! Power is inversely related to focal length. Now, because the combination is "more" converging (more power), its focal length will be less. :headbang: I think it's correct now. Thanks! :oldsmile:
6. ### Convex lenses

Homework Statement A thin double convex lens of focal length f is broken down into two halves at the axis. The two haves are then combined, as shown in the figure. What will be the focal length for the arrangements...
7. ### Relative stability of ortho and para isomers

Generally, in organic reactions, the para isomer is found to be more stable (as it is symmetrical) because of which it is produced in greater amount than the ortho isomer. However, there are some exceptions also, for example, in some reactions the less sterically hindered ortho isomer is...
8. ### Dipole in an external electric field

The direction of the resultant of A x B is just opposite to that of B x A...
9. ### Dipole in an external electric field

Homework Statement Why isn't the expression for torque on a dipole kept in an external electric field ExP? Why is it PxE? No such indication has been given in any of the derivations, that it is mandatory for it to be PxE, so why can't it be ExP? 2. The attempt at a solution Is it all about...
10. ### Kirchhoff's Loop Rule Problem.

So, the mistake lies in that "assumption" itself. It messed everything up. Thanks a lot!
11. ### Kirchhoff's Loop Rule Problem.

What would have happened if there was a question with the same circuit diagram and a cell with emf (E) 12 V was present there?
12. ### Kirchhoff's Loop Rule Problem.

No. I added it myself..
13. ### Kirchhoff's Loop Rule Problem.

No, only the portion of the figure between the points A and D has been given. But, I've assumed E > 3V.. So the current will pass according to the cell with emf 'E' only? Am I right?
14. ### Kirchhoff's Loop Rule Problem.

Homework Statement Actually, the main question is to find out the potential difference between the points 'A' and 'D'. The cell with emf 'E' has not been shown in the main question, but I have assumed it to be connected between 'A' and 'D'. Each resistor is of 1 Ohm. 2. The attempt at a...
15. ### Amplitude Modulation of a wave

They mentioned the result before deducing the expression for the same. I got it! Thanks!!
16. ### Amplitude Modulation of a wave

Ok. So, the problem lies in the arrangement of all that in my textbook..
17. ### Modulation of waves (Communication Systems)

And please help me with my first question too...(marked as 1) in the original post). If this question seems to be pointless - then please explain the working of a transducer..Since It's not clear to me. Is an electrical transducer used only in the case of a communication system involving cables...
18. ### Modulation of waves (Communication Systems)

I got the point. But still I think I didn't get the answer of the 'original' question. Actually, I'm trying to say that in the second diagram, all the oscillations are confined to one quadrant only - I mean, the wave is not "crossing" the time axis...Whereas in the first one, it can be seen...
19. ### Modulation of waves (Communication Systems)

Please look at the attachments below. I shall use the word "modulation" instead of "amplitude modulation" since I've been taught about AM only. So, my question is, in the first image (that I've attached), the messenger wave (which is modulated with the high frequency carrier wave) as well as...
20. ### Amplitude Modulation of a wave

Homework Statement I am utterly confused. When I was reading my textbook , I found something unacceptable. While deriving an expression for a modulated wave, It's been given that "A sinusoidal carrier wave can be represented as c (t) = Ac sin (ωt + Φ) where c (t) is the signal strength of...
21. ### Magnetic field inside a Solenoid

Well, my teacher has been using that formula... The application of the Biot Savart Law on the centerline of a current loop involves integrating the z-component. The symmetry is such that all the terms in this element are constant except the distance element dL , which when integrated just...
22. ### Magnetic field inside a Solenoid

Homework Statement Can I derive an equation for magnetic field inside a solenoid using the formula for magnetic field on the axis of a current carrying coil? Homework Equations B = μI/2r ( Magnetic field at the centre of a current carrying coil) The Attempt at a Solution B = μI/2r Let the...
23. ### Young's Double Slit Experiment refraction

Sorry, I didn't quite understand the point. Can you explain it diagrammatically?
24. ### Fraunhofer Diffraction Doubt

I 'm talking about the second lens...
25. ### Fraunhofer Diffraction Doubt

Does it mean why my teacher did was wrong?
26. ### Fraunhofer Diffraction Doubt

Homework Statement A monochromatic source of light 'S' is placed at the principal focus of a convex lens 'L1'. A parallel beam of light or a plane wave front is incident on the narrow slit represented by AB (its width - 'a') Homework Equations So, what my teacher did was, She showed...
27. ### Young's Double Slit Experiment refraction

No. Lateral displacement is "must", because the two media are with different refractive indices. They won't "cancel" each other's effect...rather, the emerging ray will follow a different path. (I'm pretty sure about this)
28. ### Young's Double Slit Experiment refraction

Thanks. I got it!
29. ### Young's Double Slit Experiment refraction

Homework Statement Young's double slit experiment 'd' - Separation between the two slits 'D' - Separation between the double slit and the screen 'S' - Source (Primary) (It is coherent) S1, S2 - Secondary sources Δx - Path difference between the two rays coming out from S1 and S2 Δx° - Path...
30. ### Stability of carbocations and inductive effect

Which carbocation is more stable? 1) CH3-C+=CH2 2) CH3-CH+-CH3 Basically, I want to know whether the =CH2 group is electron donating or electron withdrawing. Does it show +I effect like alkyl groups? I mean, like in 2) the carbocation will get stabilised due to the electron donating power of...