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KVPY2016PhysicsDual Nature of Matter

Electrons accelerated from rest by an electrostatic potential are collimated and sent through a Young's double slit setup. The fringe width is w . If the accelerating potential is doubled then the width is now close to -

Options

  1. A0.5 w
  2. B0.7 w
  3. C1.0 w
  4. D2.0 w

Correct answer

B. 0.7 w

Step-by-step solution

aligned &= D ~d &= h mV = h 2 mq V & 1 V aligned as V is double is 1 2 times of _ old aligned _ new &=0.7 &=0.7 w aligned

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