JEE Main questions
34495 published questions with worked solutions.
- A sonometer wire of length 1.5 m is made of steel. The tension in it produces an elastic strain of 1%. What is the fundamental...
- A projectile is given an initial velocity of ( i +2 j ) m/s, where i is along the ground and j is along the vertical. If g = 10...
- The supply voltage to a room is 120 V. The resistance of the lead wires is 6Ω. A 60 W bulb is already switched on. What is the...
- This question has Statement-I and Statement-II. Of the four choices given after the statements, choose the one that best...
- Two charges, each equal to q, are kept at x = – a and x = a on the x-axis. A particle of mass m and charge q_0 = q 2 is placed at...
- This question has Statement-I and Statement-II. Of the four choices given after the statements, choose the one that best...
- Two capacitors C_1 and C_2 are charged to 120 V and 200 V respectively. It is found that by connecting them together the...
- What is the minimum energy required to launch a satellite of mass m from the surface of a planet of mass M and radius R in a...
- A diode detector is used to detect an amplitude modulated wave of 60% modulation by using a condenser of capacity 250 pico farad...Not in JEE or NEET syllabus
- Let [ε₀] denote the dimensional formula of the permittivity of vacuum. If M = mass, L = length, T = time and A = electric...
- The magnetic field in a traveling electromagnetic wave has a peak value of 20 nT. The peak value of electric field strength is -
- The real number k for which the equation, 2x^3 + 3x + k = 0 has two distinct real roots in [0, 1]
- The number of values of k, for which the system of equation : (k + 1) x + 8y = 4k, kx + (k + 3) y = 3k –1, has no solution, is -
- If P = bmatrix 1 & & 3 1 & 3 & 3 2 & 4 & 4 bmatrix is the adjoint of a 3 × 3 matrix A and |A| = 4, then α is equal to -
- At present, a firm is manufacturing 2000 items. It is estimated that the rate of change of production P w.r.t. additional number...
- ABCD is a trapezium such that AB and CD are parallel and BC ⊥ CD. If ∠ADB = θ, BC = p and CD = q, then AB is equal to -Not in JEE syllabus
- All the students of a class performed poorly in Mathematics. The teacher decided to give grace marks of 10 to each of the...
- A ray of light along x + 3 y = 3 gets reflected upon reaching x-axis, the equation of the reflected ray is -
- If f(x)dx = (x), then x^5 f(x^3)dx is equal to -
- Let A and B be two sets containing 2 elements and 4 elements respectively. The number of subsets of A × B having 3 or more...
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