The JEE Main Physics section requires speed and accuracy, along with a thorough understanding of the Relative Velocity. This article provides a set of JEE Main PYQs on Relative Velocity to help you understand the topic and improve your problem-solving skills with the help of detailed solutions by ensuring conceptual clarity, which will help you in the JEE Main 2026 preparation.
Whether you're revising the basics or testing your knowledge, these JEE Main PYQs will serve as a valuable practice resource.
The JEE Main 2026 exam is likely to continue on the same pattern as JEE Main 2025. Out of 90 questions, students can expect a fair mix from all three subjects. To get an edge, going through JEE Main previous year questions (PYQs) is one of the best strategies.
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JEE Main PYQs on Relative Velocity
1.
Two trains 'A' and 'B' of length \('l'\) and \('4l'\) are travelling into a tunnel of length 'L' in parallel tracks from opposite directions with velocities 108 km/h and 72 km/h, respectively. If train 'A' takes 35s less time than train 'B' to cross the tunnel then. length 'L' of tunnel is:
(Given L = 60 \(l\))- 1800 m
- 900 m
- 1200 m
- 2700 m
2.
Consider a light ray travelling in air is incident into a medium of refractive index √2n The incident angle is twice that of refracting angle. Then, the angle of incidence will be:- \(sin^{-1}(\sqrt n)\)
- \(cos^{-1}(\sqrt{\frac{n}{2}})\)
- \(sin^{-1}(\sqrt{2n})\)
- \(2cos^{-1}(\sqrt{\frac{n}{2}})\)
3.
A body of mass \( (5 \pm 0.5) \, \text{kg} \) is moving with a velocity of \( (20 \pm 0.4) \, \text{m/s} \). Its kinetic energy will be:
- (1000 ± 0.14) J
- (1000 ± 140) J
- (500 ± 0.14) J
- (500 ± 140) J
4.
A bullet of 10 g leaves the barrel of gun with a velocity of 600 m/s. If the barrel of gun is 50 cm long and mass of gun is 3 kg, then value of impulse supplied to the gun will be :- 12 Ns
- 3 Ns
- 6 Ns
- 36 Ns
5.
A uniform metallic wire carries a current $2 A$, when $34 V$ battery is connected across it The mass of uniform metallic wire is $892 \times 10^{-3} kg$, density is $892 \times 10^3 kg / m ^3$ and resistivity is $17 \times 10^{-8} \Omega- m$ The length of wire is :- $l=10\, m$
- $l=100\, m$
- $l=5\, m$
- $l=6.8 \, m$
6.
A planet having mass \(9M_e\) and radius \(4R_e\), where \(M_e\) and \(R_e\) are mass and radius of earth respectively, has escape velocity in km/s given by: (Given escape velocity on earth \(V_e= 11.2 × 10^3 m/s\))- 67.2
- 33.6
- 16.8
- 11.2
7.
A river is flowing from west to east direction with speed of \(9\) km/hr. If a boat capable of moving at a maximum speed of \(27\) km/hr in still water, crosses the river in half a minute, while moving with maximum speed at an angle of \(150^\circ\) to direction of river flow, then the width of the river is:- 300 m
- 112.5 m
- 75 m
- \( 112.5 \times \sqrt{3} \) m
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