JEE Main questions
34495 published questions with worked solutions.
- Let f(x) = cases 5, & x > 2 1+x+[x], x+2[x] , & 0 x 2 3x, & x < 0 cases where [.] denotes greatest integer function. If and are...
- Let E_1 : x^2 9 + y^2 4 = 1 be an ellipse. Ellipses E_i's are constructed such that their centres and eccentricities are same as...
- In the experiment for measurement of viscosity ' ' of given liquid with a ball having radius R, consider following statements. A....
- Consider following statements: A. Surface tension arises due to extra energy of the molecules at the interior as compared to the...
- Three infinitely long wires with linear charge density are placed along the x-axis, y-axis and z-axis respectively. Which of the...
- A Carnot engine (E) is working between two temperatures 473K and 273K. In a new system two engines – engine E_1 works between...
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: A sound wave...
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: In a central...
- Choose the correct nuclear process from the below options [p: proton, n: neutron, e^-: electron, e^+: positron, : neutrino, :...
- A wire of resistance R is bent into an equilateral triangle and an identical wire is bent into a square. The ratio of resistance...
- Due to presence of an em-wave whose electric component is given by E = 100 sin( t–kx) NC^ -1 , a cylinder of length 200 cm holds...
- A proton of mass 'm_p' has same energy as that of a photon of wavelength ' '. If the proton is moving at non-relativistic speed,...
- A thin prism P_1 with angle 4° made of glass having refractive index 1.54, is combined with another thin prism P_2 made of glass...
- A tiny metallic rectangular sheet has length and breadth of 5 mm and 2.5mm, respectively. Using a specially designed screw gauge...
- The moment of inertia of a solid disc rotating along its diameter is 2.5 times higher than the moment of inertia of a ring...
- In a measurement, it is asked to find modulus of elasticity per unit torque applied on the system. The measured quantity has...
- Two iron solid discs of negligible thickness have radii R_1 and R_2 and moment of intertia I_1 and I_2, respectively. For R_2 =...
- The incorrect decreasing order of atomic radii is :
- Statement I : In the oxalic acid vs KMnO_4 (in the presence of dil H_2SO_4) titration the solution needs to be heated initially...
- Match the List-I with List-II List-I (Redox Reaction): (A) CH_4(g) + 2O_2(g) CO_2(g) + 2H_2O(l) (B) 2NaH(s) 2Na(s) + H_2(g) (C)...