JEE Main 2019 | April 8th, Shift 1 | Paper Analysis + Solved Questions | Physics

This video has 10 most interesting Physics problems(memory based) from the JEE Main exam held on 8th April 2019 (Shift 1). Physics was mostly easy this time as compared to JEE Main exams held in January 2019. Mechanics and electromagnetism section had two-third of the total questions as usual. Have a look at these questions if you are preparing for JEE, visit

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Q1. This is a question based on L-R circuit. The rate of dissipation of energy from resistor is equal to the rate of energy being stored in the inductor. You should be aware of current growth and current decay equations in order to solve this question. 01:07

Q2. This equation is based on Stefan’s law where you are given with two identical containers having different liquids of same emissivity and different specific heat capacity. You have to plot the temperature vs. time graph using this law. 09:07

Q3. In this question you are given with a rod having two different cross-sections and ratio of their radii is given. You have to find out the ratio of antinodes in the standing waves formed in them individually, using the formula of fundamental frequency. 15:37

Q4. In this question you are given with a disc with variable mass distribution from its centre and that relationship is provided in the question. You have to find out the value of moment of inertia about an axis passing through its edge and parallel to its axis using parallel axis theorem and integration. 20:11

Q5. In this question you have to find out the potential difference between the surfaces of two concentric spheres for different charge configurations using the concepts of electric field and potential. 25:48

Q6. You must be capable of resolving forces and aware about gravitational forces acting on a particular mass in multi point mass system. Four identical masses are kept on the vertices of a square and are revolving around their centre of mass and you have to find out the velocity of a particular mass by using the concept of centripetal force. 27:21

Q7. This question is based on the concepts of electromagnetic induction and damped oscillation. A slider is connected to a spring and displaced by a certain distance in the given setup and with time the amplitude keeps on decreasing because of the force acting due to the presence of induced current. 33:00

Q8. This question is based on the concept of relative velocity in a plane. You have to find out the distance of minimum separation between these two objects. 40:34

Q9. Here the setup consists of a convex lens and a concave mirror. You have to tell the nature of the image formed in the given setup using properties of lenses and mirrors. 47:24

Q10. This question uses the concepts of momentum conservation and de-Broglie wavelength. Here two particles having different momenta collide with each other inelastically and you have to find out the de-Broglie wavelength of the combined mass in terms of wavelengths of the masses colliding. 50:14

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Check out our videos on JEE Main, January Shift!

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