Day 364: JEE Mains Physics

Current Electricity. Asked once: 28 Jun 2022 (same type asked 4 times) See all 4 of this type

23

Current measured by the ammeter (a) in the reported circuit when no current flows through $10\Omega$ resistance will be $\_\_\_\_$ A.

Show model answer

Electromagnetic Waves. Asked once: 2021 Paper 22 (same type asked 4 times) See all 4 of this type

System of Particles and Rotational Motion. Asked once: 29 Jan 2023 (same type asked 4 times) See all 4 of this type

111

A particle of mass $100\text{ }g$ is projected at time $t = 0$ with a speed $20{\text{ }ms}^{- 1}$ at an angle $45^{\circ}$ to the horizontal as given in the figure. The magnitude of the angular momentum of the particle about the starting point at time $t = 2\text{ }s$ is found to be $\frac{\sqrt{K}kgm^{2}}{s}$. The value of $K$ is (Take $\left. \ g = 10{\text{ }ms}^{- 2} \right)$

Show model answer

Motion in a Plane. Asked once: 29 Jul 2022 (same type asked 4 times) See all 4 of this type

Electrostatics. Asked once: 28 Jul 2022 (same type asked 4 times) See all 4 of this type

100

A uniform electric field $E = (8\text{ }m/e)V/m$ is created between two parallel plates of length $1\text{ }m$ as shown in figure, (where $m =$ mass of electron and $e =$ charge of electron). An electron enters the field symmetrically between the plates with a speed of $2\text{ }m/s$. The angle of the deviation $(\theta)$ of the path of the electron as it comes out of the field will be

1. A.
   $\tan^{- 1}(4)$
2. B.
   $\tan^{- 1}(2)$
3. C.
   $\tan^{- 1}\left( \frac{1}{3} \right)$
4. D.
   $\tan^{- 1}(3)$

Tap an option to check your answer.

Show answer