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Welcome to the BYJU’S JEE questions and answers page! Students and aspirants can access a huge library of questions covering all the important topics that are included in the JEE syllabus. The questions and answers have been prepared by a group of experienced subject matter experts. Students will find questions framed from Physics, Maths and Chemistry subjects.

The JEE questions and answers discussed here will give a much clearer idea of many JEE topics such as gravitation, thermodynamics, atomic structure, chemical bonding, binomial theorem, quadratic equation, etc. The questions have further been answered in an informative and easy to understand manner.

Alternatively, the questions are very important from an examination point of view and can help in quick revision of the different topics. Additionally, students can also clear their doubts and confusion by referring to these questions regarding any concept or topic. Students will find questions that are both conceptual and descriptive including definitions, principles, formulas, examples of, properties of, and types.

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Answer: 1) 1 : 2 2) 1 : 1 3) 4 : 1 4) 1 : 4 Answer: 4) 1 : 4 Solution: E = p2/2m m ∝ 1/E (If momentum are constant) (m1/m2) = E2/E1 = 1/4...
Answer: 1) 20 J 2) 30 J 3) 40 J 4) 10 J Answer: 1) 20 J Solution: The energy lost due to the air friction will be equal to the difference in the initial kinetic energy and the final potential...
Answer: 1) 16 times 2) 8 times 3) 2 times 4) 4 times Answer: 1) 16 times Work = Force x Displacement If the unit of force and length is increased by four times then the unit of energy will increase by 16...
Answer: 1) Negative work 2) Positive but not maximum work 3) No work at all 4) Maximum work Answer: 3) No work at all Solution: Work = Force x Displacement Since the displacement is zero, the...
Answer: 1) 2 m 2) 1.5 m 3) 1 m 4) 0.5 m Answer: 2) 1.5 m Solution: The kinetic energy of the ball = Potential energy of the spring (1/2)mv2 = (1/2)kx2 (1/2) x 2 x (3)2 = (1/2) x 144 x x2 9...
Answer: 1) 5J 2) (⅚) J 3) 6J 4) 75J Answer: 2) (⅚) J Solution: Force, F = ma 5 = 15a a = (1/3) m/s2 Since, S = ut + (1/2)at2 S = 0 + (1/2) x (1/3) x (1)² S = 1/6 Work = Force *...
Answer: 1) 1 J 2) 1.25 J 3) 1.5 J 4) 1.75 J Answer: 2) 1.25 J Solution: Mass, m = 5g = 0.005 Kg h = 19.5 m x = 50 cm = 0.5 m v = 10 m/s The change in the mechanical energy, ΔU =...
Answer: 1) 49 J 2) 98 J 3) 196 J 4) None of these Answer: 2) 98 J Solution: Work done = mgh = 10 x 9.8 x 1 = 98 J...
Answer: 1) t1/2 2) t3/4 3) t3/2 4) t2 Answer: 3) t3/2 Solution:  Let S be the distance moved by the body Power, P = F.v Force, F = m.a v = S/t a = S/t2 P = [mS/t2] x [S/t] S2 =...
Answer: 1) Momentum 2) velocity 3) Force 4) Power Answer: 1) Momentum Solution: Slope = dK.E/dx = mv (dv/dx)  = mv (dv/dt) x (dt/dx) = mv (dv/dt) x 1/(dx/dt)  = mva x (1/v) = ma = F...
Answer: 1) 43200 2) 432 3) 72 4) 7.2 Answer: 4) 7.2 Solution: Power = Work done/Time taken  = Total kinetic energy of the bullets/Time taken Total kinetic energy of the bullets =...
Answer: 1) 5 J 2) 350 J 3) 100 J 4) 3430 J Answer: 4) 3430 J Solution: Work done to climb a height h = potential energy gained to reach the height h = mgh Joules m = mass of man+mass of load...
Answer: 1) 1 2) 1/2 3) 2/1 4) None of these Answer: 3) 2/1 Solution: Power = Work/time P ∝ 1/t P1/P2 = t2/t1 = 20/10 = 2/1...
Answer: 1) 4 ms-1 2) 6 ms-1 3) 10 ms-1 4) 12 ms-1 Answer: 2) 6 ms-1 Solution: m1u1 + m2u2 = (m1 + m2)v 10 x u1 + 5 x 0 = (10 + 5) x 4 u1 = (15 x 4) /10 = 60/10 = 6 m/s...
Answer: 1) v 2) 2v 3) zero 4) v/2 Answer: 1) v Solution:  In an elastic collision, the magnitude of the velocity will remain the same but the direction will be reversed. Therefore, the...
Answer: 1) 1/4 2) 1/3 3) 2/3 4) ¾ Answer: 3) 2/3 Applying law of conservation of momentum m1v1 - m2v2 = (m1 + m2)v ⇒ (2 x 3) - (1 x 4) = (2+1)v 6 - 4 = 3v 2 = 3v v = (2/3) m/s...
Answer: 1) 3/4 2) 1/4 3) 2/3 4) 1/2 Answer: 4) 1/2 Solution: Length of the chain = l Mass of the chain = m one-third of its length hangs over the edge = l/3 Mass distributed along the...
Answer: 1) Same everywhere 2) Lower in front side 3) Lower in the rear side 4) Lower in the upper side Answer: 2) Lower in front side Solution: The density of the gas molecules will be more on...
Answer: 1) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. 2) If both Assertion and Reason are true but Reason is not the correct explanation of the...
Answer: 1) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. 2) If both Assertion and Reason are true but Reason is not the correct explanation of the...
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