east
west
north
south
Step 1: Understanding the motion of the electron
- The electron is initially moving downward due to gravity. - It enters a uniform magnetic field directed towards the south. - The force on a charged particle moving in a magnetic field is given by the Lorentz force: \[ \mathbf{F} = q (\mathbf{v} \times \mathbf{B}) \] where: - \( q \) is the charge of the electron (\( -e \)), - \( \mathbf{v} \) is the velocity vector of the electron, - \( \mathbf{B} \) is the magnetic field vector.
Step 2: Apply the Right-Hand Rule (Fleming's Left-Hand Rule)
- The velocity \( \mathbf{v} \) of the electron is downward (\( -\hat{z} \)). - The magnetic field \( \mathbf{B} \) is directed towards the south (\( -\hat{y} \)). - Using the cross-product \( \mathbf{v} \times \mathbf{B} \): \[ (-\hat{z}) \times (-\hat{y}) = \hat{x} \text{ (towards east)} \] Since the electron has a negative charge, the force acts in the opposite direction to the computed cross-product, meaning the electron is deflected towards the east.
Match the following:
Match the following:
Assertion (A): Endosperm is haploid in Gymnosperms
Reason (R): Female gametophytic tissue acts as endosperm in Gymnosperms
In the following group of plants, sporophytes are dependent on gametophytes.
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