-- 9. Two trains each 100 m long are travelling in opposite ... — Physics | Mockzy | Mockzy

MediumPhysicsfluid

+4 / -1

-- 9. Two trains each 100 m long are travelling in opposite direction with velocity 20 m/s and 30 m/s. Time taken by trains in crossing each other will be (in second)

A

2

B

3

C

4

D

7

-- 8. The position-time graph of a moving particle is shown. The instantaneous v

-- 10. The ratio of magnitude of displacement to the distance covered is

More from fluid

-- In a p-type semiconductor, the majority charge carriers are

-- The energy of an electron in nth orbit of hydrogen atom is E_n = -13.6/n² eV. The energy required

-- Two magnets of magnetic moments M and 2M are placed in a vibration magnetometer, with like poles

-- For the logic circuit shown below, the truth table is

The susceptibility of a paramagnetic material is χ at 27°C. At what temperature will its susceptibil

-- 8. Assertion (A): Nuclear density is nearly same for all the atoms.Reason (R): The radius of nucl

Practice Physics Exams

Full-length mock tests with detailed analytics, rank, and percentile.