JEE Main - Physics मॉक टेस्ट

Two point charges q₁ = +3 μC and q₂ = −12 μC are placed 3 m apart in air. The force exerted by q₂ on q₁ is:

500 g of water at 80°C is mixed with 500 g of water at 20°C in an insulated container. What is the final equilibrium temperature? (Neglect heat capacity of container)

A particle of mass 1 kg moves in a conservative force field with potential energy U = (3x + 4y) J, where x and y are in metres. If the particle is released from rest at point (1 m, 1 m), the magnitude of its acceleration at that instant is:

In a meter bridge experiment, the null point is obtained at 40 cm from the left end when resistance R is in the left gap and 6 Ω is in the right gap. The value of R is:

A series LCR circuit with R = 50 Ω, L = 0.2 H, and C = 50 μF is connected to an AC source of variable frequency. At resonance, the impedance of the circuit is:

A coil of 100 turns has an area of 0.01 m². A magnetic field of 0.5 T perpendicular to the coil is increased to 1.5 T in 0.1 s. The induced emf is:

In the Bohr model of the hydrogen atom, the electron transitions from the n = 3 energy level to the n = 1 level. The wavelength of the emitted photon is: (R_H = 1.097 × 10⁷ m⁻¹)

A block of mass m slides down a frictionless incline at angle θ. The normal force exerted by the incline on the block is: