Search NEET and JEE physics questions

17 questions with step-by-step solutions.

17 questions

The dimensional formula of Planck's constant h isQ 11-01-001Units and MeasurementsNEET, JEE MainMCQEasy
Consider a modified Bernoulli equation. (P + (A)/(Bt^2)) + ρ g(h + Bt) + (1)/(2)ρ V^2 = constant If t has the dimension of time then the dimensions of A and B are…Q 11-01-002Units and MeasurementsJEE MainMCQMedium
A car starts from rest and accelerates uniformly to 20 m/s in 5 s. The distance it covers in this time isQ 11-02-001Motion in a Straight LineNEETMCQEasy
A ball is projected with speed 20 m/s at 30° above the horizontal. Taking g = 10 m/s^2, the maximum height reached isQ 11-03-001Motion in a PlaneJEE MainMCQEasy
A 5 kg block on a smooth horizontal floor is pulled by a 20 N force acting at 60° to the horizontal. Its acceleration isQ 11-04-001Laws of MotionNEETMCQEasy
A block is released from rest on a smooth inclined plane as shown. Find the magnitude of its acceleration along the incline in m/s^2. (Take g = 10 m/s^2.)Q 11-04-002Laws of MotionJEE MainNumericalEasy
The speed of a 2 kg body increases from 3 m/s to 5 m/s. Find the work done by the net force on it, in joules.Q 11-05-001Work, Energy and PowerJEE MainNumericalEasy
A solid sphere rolls without slipping on a horizontal surface. What fraction of its total kinetic energy is rotational?Q 11-06-001System of Particles and Rotational MotionJEE MainMCQMedium
A planet has the same average density as Earth but twice its radius. If the escape speed from Earth is 11.2 km/s, the escape speed from the planet isQ 11-07-001GravitationNEETMCQMedium
A Carnot engine works between a source at 500 K and a sink at 300 K. Its efficiency isQ 11-11-001ThermodynamicsNEETMCQEasy
Point charges +4 μC and +1 μC are 30 cm apart. At what distance from the 4 μC charge, on the line joining them, is the electric field zero?Q 12-01-001Electric Charges and FieldsJEE MainMCQMedium
Three 6 Ω resistors are connected in parallel across an ideal 12 V battery. The current drawn from the battery isQ 12-03-001Current ElectricityNEETMCQEasy
The equivalent resistance between points A and B in the circuit shown isQ 12-03-002Current ElectricityNEET, JEE MainMCQEasy
A proton moves at 2 × 10^6 m/s perpendicular to a uniform magnetic field of 0.1 T. Find the radius of its circular path in cm. (Take m_p = 1.67×10^-27 kg, e =…Q 12-04-001Moving Charges and MagnetismJEE AdvancedNumericalHard
A 0.5 m rod moves at 4 m/s perpendicular to its length and to a uniform magnetic field of 0.2 T. Find the emf induced across its ends, in volts.Q 12-06-001Electromagnetic InductionJEE MainNumericalEasy
An object is placed 30 cm in front of a convex lens of focal length 20 cm. The image formed isQ 12-09-001Ray Optics and Optical InstrumentsJEE MainMCQMedium
The energy of a photon of wavelength 400 nm is approximately (take hc = 1240 eV nm)Q 12-11-001Dual Nature of Radiation and MatterNEETMCQEasy