JEE Main questions
34495 published questions with worked solutions.
- Assertion (A) : If Young's double slit experiment is performed in an optically denser medium than air, then the consecutive...
- Two spherical bodies of same materials having radii 0.2 m and 0.8 m are placed in same atmosphere. The temperature of the smaller...
- An amount of ice of mass 10⁻³ kg and temperature –10°C is transformed to vapour of temperature 110° by applying heat. The total...
- An electron in the ground state of the hydrogen atom has the orbital radius of 5.3 × 10⁻¹¹ m while that for the electron in third...
- A closed organ and an open organ tube filled by two different gases having same bulk modulus but different densities ρ1 and ρ2...
- The work functions of cesium (Cs) and lithium (Li) metals are 1.9 eV and 2.5 eV, respectively. If we incident a light of...
- If B is magnetic field and μ0 is permeability of free space, then the dimensions of (B/μ0) is
- Statement-I : The equivalent emf of two nonideal batteries connected in parallel is smaller than either of the two emfs....
- A parallel-plate capacitor of capacitance 40μF is connected to a 100 V power supply. Now the intermediate space between the...
- Given is a thin convex lens of glass (refractive index μ) and each side having radius of curvature R. One side is polished for...
- Two soap bubbles of radius 2 cm and 4 cm, respectively, are in contact with each other. The radius of curvature of the common...
- The driver sitting inside a parked car is watching vehicles approaching from behind with the help of his side view mirror, which...
- The position vectors of two 1 kg particles, (A) and (B), are given by r _A = ( _1t^2 i + _2t j + _3t k ) m and r _B = ( _1t i +...
- A solution of aluminium chloride is electrolysed for 30 minutes using a current of 2A. The amount of the aluminium deposited at...
- How many different stereoisomers are possible for the given molecule ? CH3 – CH(OH) – CH = CH – CH3
- Which of the following electronegativity order is incorrect?
- Lanthanoid ions with 4f⁷ configuration are : (A) Eu2+ (B) Gd3+ (C) Eu3+ (D) Tb3+ (E) Sm2+ Choose the correct answer from the...
- Match List-I with List-II List-I: (A) Al3+ < Mg2+ < Na+ < F– (B) B < C < O < N (C) B < Al < Mg < K (D) Si < P < S < Cl List-II:...
- Which of the following acids is a vitamin ?
- A liquid when kept inside a thermally insulated closed vessel at 25°C was mechanically stirred from outside. What will be the...