Roadmap to score high in physics

Rajshekhar Ratrey

JEE Main is a difficult exam, and every year, lakhs of students try their best to score high and qualify for JEE Advanced. According to the latest JEE Main pattern, the exam is held twice every year, giving students a better opportunity at giving it their best shot. Between the two exams, only their best scores will be considered for qualifying into JEE Advanced. 

The first session of JEE Main 2020 will be held between January  6 and 11, 2020 next year. Here’s how you should plan your preparation for physics over the next eight weeks: 

November 1 - 15: Complete your syllabus

By now, you should have completed the syllabus. In case you haven't, use these 15 days in completing as much as you can. Give more weightage to topics that have been popular with exam setters in the past. There is a higher chance that they will follow a similar pattern in 2020. 

November 16 - 30: Subject wise mock tests

This is when you stop learning new concepts and take a subject-wise mock test every day. Every year, a large number of students find physics the toughest of the three, so you can spend some extra days on this subject. These mock tests will help you get used to the new paper pattern set by the NTA while letting you hyper-focus on one subject at a time.

After every mock test, go through the solution carefully and map out questions where you went wrong. Brush up on those topics for the rest of the day so that you don’t repeat your mistakes.

December 1-15: All India level mock tests

By now, it is high time to start taking mock tests on a daily basis. Ensure that you take these tests in an exam-like environment. Take these at the same time of the day as your exam to train your body clock.  You can also take these mock tests on complete learning apps where you can compete with students across India and know where you stand.

December 16-January 5: Quick revisions

This is the most crucial period before your JEE Main exam. You need to keep yourself calm and not let the exam pressure affect you. At the same time, concentrate on your health so that you are fresh on your exam day  — start eating healthy, drink plenty of water and juices, avoid outside food, and get at least 7 hours of sleep every day. 

Along with a mock test every day, also revise one subject every day. This may seem daunting at first, but use your notes and flashcards to go through the key formulae and theorems. In case you haven’t created short notes, many edtech apps offer summaries and highlights of every chapter in the form of short concepts and stories for free. 

Most Board exams are held between February and March, so don’t rote learn the JEE Main syllabus. Understanding it completely will also go a long way in boosting your board exam preparation. All the best!

Important topics?

• When it comes to physics, focus on Magnetics. This is a high-scoring topic and a favourite of exam setters. 
• Another important topic is Electromagnetic Induction and AC. This one is known for its numericals, so practice plenty of them. 
• Under Current Electricity, ensure that you fully understand ohm’s law, colour code for resistors, and characteristics of conductors. 
• When it comes to Waves, don’t miss out on SHM and the Doppler Effect.

In the following common emitter configuration an n-p-n transistor with current gain ? = 100 is used. The output voltage of the amplifier will be :

A 10 mV

B 0.1 V

C 1.0 V

D 10 V

A moving coil galvanometer has 150 equal divisions.Its current sensitivity is 10 divisions per milli ampere and voltage sensitivity is 2 divisions per milli volt. In order that each division reads 1 volt, the resistance in ohm needed to be connected in series, with the coil will be

A 1000

B 100000

C 99995

D 9995

A wave pulse starts propagating in positive x? direction along a non-uniform wire of length 10 m with mass per unit length given m = m0 + ?x and under a tension of 100 N. The time taken by the pulse to travel from the lighter end (x = 0) to the heavier end is (given m0 = 10?2kg and ? = 9 × 10?3 kg/m)

A 4.66 sec

B 0.2268 sec

C 7.133 sec

D 5.24 sec

The plates of a parallel plate capacitor are charged to 200 V and then, the charging battery is disconnected. Now, a dielectric slab of dielectric constant 5 and thickness 4 mm is inserted between the capacitor plates. To maintain the original capacity, the increase in the separation between the plates of the capacitor is:

A 1.6 mm

B 3.2 mm

C 0.8 mm

D 4.8 mm

When 92 U 235 undergoes Fission about 0.1% of the original mass is converted into energy. Then the amount of 92 U 235 should undergo ?ssion per day in a nuclear reactor, so that it provides 200 mega watt electric power, is

A 9.6 × 10?2kg

B 4.8 × 10?2kg

C 19.2 × 10?2kg

D 1.2 × 10?2kg

A short magnet oscillates in Vibration Magnetometer with a time period of 0.1sec where BH is 24?T . An upward current of 18A is established in the vertical wire placed 20cm

east of the magnet. The new time period is :

A 0.4sec

B 0.2sec

C 0.1sec

D 0.3sec

Photoelectrons emitted from a photo sensitive metal of work function 1eV describe a circle of radius 0.1 cm in a magnetic ?eld of induction 10?3 Tesla. The energy of the incident photons is (mass of electron = 9 × 10?31 kg)

A 1.17eV

B 2.9eV

C 0.9eV

D 0.81eV

 — The writer is VP, Educational Content, Toppr