We hope that your exam preparation is going on at full pace! With the exam season round the corner, you might be looking for simple hacks, shortcuts or methods to score well. Physics, in particular, involves a lot of tricky problems and “give reason” type questions.
Not only is remembering formulae important, but also the ability to apply appropriate ones for the right questions. So studying hard seems to be the only option at hand here. Studying smart, however, can make this roller coaster ride a bit smoother.
So we went ahead and did some research of our own; here’s a summary of the previous five years’ papers for ISC Physics.
The topics mentioned here are the most repeated ones and hence, are more likely to appear again. However, neglecting other topics might not be a wise thing to do :) So read on and all the best!
1. LCR/RC/LR circuits
One of the most repeated questions in the previous question papers were problems on LCR circuits from the chapter Current Electricity. Most of the problems revolve around finding the current in the circuit, power and phase difference or sometimes, the values of C or L dissipated at resonance. Remember, LR and LC circuits are special cases of the LCR circuit, so practice a lot of problems.
2. Potentiometer/EMF of a cell
This question consists of finding internal resistance, emf of the cell or the galvanometer reading of the circuit. Problems may seem quite different from one another but they are, in fact, similar to one another.
3. Young's Double Slit
Young’s Double Slit Experiment is often repeated in previous question papers - sometimes as a theory question asking the effect of various parameters such as slit width, wavelength or screen-slit distance, but mostly problems for finding distance between fringes etc.
4. KCL/KVL/Wheatstone network
The three topics might be different from one another, but they come under the same chapter. Practice problems on solving electrical networks by KCL/KVL, remember the condition when a Wheatstone network is balanced (also, practice the derivation for the same!)
5. Ray Optics
Okay, we know we aren’t being exactly subtle, but many topics have been covered in previous papers on Ray Optics. Specifically, problems on surfaces (spherical, concave, convex) and lenses are of utmost importance. Resolving power of both compound microscope and telescope (both theory and problems) have also been asked repeatedly.
6. Dipoles and Capacitors
Topics to be focused on are electric field intensity on a charge on equatorial line, axial line or at an angle. You may encounter a derivation or a problem based on the topic. Problems on capacitors or combination of capacitors are common. However, formula for energy stored and potential energy should also be practiced.
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