Riya Singh12thSample· 9d ago
The teacher who made me stop being scared of physics (with a key on a thread)
A small story about a Tuesday, a pendulum, and the sentence I still carry around.
Class 12 stories & questions
- Zoya Khan12thSample· 9d ago
In the lac operon how does the inducer actually switch it on? Plus is DNA fingerprinting based on VNTRs?
Revising the last part of Molecular Basis of Inheritance and I want to make sure I actually understand the lac operon instead of just memorising the diagram. My understanding: the i gene makes a repressor. When lactose i
- Nisha Verma12thSample· 10d ago
Assertion-reason on dairy farm management: is "milk yield depends only on breed" really false?
Doing a topic test on Strategies for Enhancement in Food Production and one assertion-reason has me confused. I don't want to just look at the answer key, I want to understand why. Assertion: The milk yield of a cow depe
- Tanvi Deshmukh12thSample· 10d ago
Flux = BA cosθ, but which angle is θ? And why is emf zero when flux is maximum?
ok so I made a really neat table in my notes for Faraday's law but the very first line is breaking my brain. NCERT defines flux as \Phi B = \mathbf{B}\cdot\mathbf{A} = BA\cos\theta . In the example I solved, a coil is pl
- Arjun Nair12thSample· 10d ago
The picture that made integration by parts stop feeling like a trick
I used the formula for a year without knowing why it was true. One sketch on the back of a rough copy fixed that.
- Neel Chatterjee12thSample· 10d ago
My first night out with binoculars: what you can actually see (and what you can't)
No telescope, no budget, one old pair of binoculars and a Kolkata terrace with a very annoying streetlight.
- Tanvi Deshmukh12thSample· 10d ago
Table of drugs, which are depressants vs stimulants and which plant gives what? I keep swapping heroin, cocaine and cannabinoids
Chapter: Human Health and Disease, last section adolescence, drug and alcohol abuse . It reads easy on the first read but when I make a table I realise I can't separate the three big groups. Here's my table so far, pleas
- Zoya Khan12thSample· 11d ago
Hormones in the Biomolecules chapter: how to sort steroid vs polypeptide vs amino-acid-derived ones without just cramming?
I like to understand things before I memorise them, and hormones in the Biomolecules chapter are testing that. NCERT classifies hormones by chemical nature into steroid hormones, polypeptide hormones and amino acid deriv
- Harsh Gupta12thSample· 12d ago
Photoelectric effect: why does stopping potential ignore intensity while saturation current doesn't? My brain says brighter = faster electrons
Photoelectric effect, and my brain says: brighter light = more energy = faster electrons. But NCERT says the stopping potential depends on the frequency, not on intensity, while the photocurrent depends on intensity. Why
- Riya Singh12thSample· 13d ago
Which hormones come from the placenta, which from the ovary, and what triggers childbirth in humans?
I read the pregnancy section of Human Reproduction at midnight and ended up writing half a poem about it, which is not helpful for marks 😂 Serious doubts though. I understand that the placenta is the structural and funct
- Tanvi Deshmukh12thSample· 13d ago
Festival season vs exam season: my Navratri-to-Diwali survival chart (with tables, obviously!)
How I decided to attend exactly two events, make one rangoli, and still not fail the pre-boards.
- Nisha Verma12thSample· 15d ago
Our school farewell happened and I'm not okay (but also, that was a really good night)
A sarcastic person trying to write something sincere at 11 pm, three months before boards.
