An electron, moving along the x-axis with an initial energy of 100 eV, enters a region of magnetic field \(\vec B = \left( {1.5 \times {{10}^{ - 3}}T} \right)\hat k\) at S (see figure). The field extends between x = 0 and x = 2 cm. The electron is detected at the point Q on a screen placed 8 cm away from the point S. The distance d between P and Q (on the screen) is:(Electron’s charge = 1.6 × 10-19 C; Mass of the electron = 9.1 × 10-31 kg

An electron, moving along the x-axis with an initial energy of 100 eV,

1.	An electron, moving along the x-axis with an initial energy of 100 eV, enters a region of magnetic field \(\vec B = \left( {1.5 \times {{10}^{ - 3}}T} \right)\hat k\) at S (see figure). The field extends between x = 0 and x = 2 cm. The electron is detected at the point Q on a screen placed 8 cm away from the point S. The distance d between P and Q (on the screen) is:(Electron’s charge = 1.6 × 10-19 C; Mass of the electron = 9.1 × 10-31 kg
A.	11.65 cm
B.	12.87 cm
C.	1.22 cm
D.	2.25 cm
Answer» C. 1.22 cm