Which of the following statements is incorrect?

  • A
    The angle of dip at magnetic poles is $90^o$.
  • B
    Due to the Earth's magnetic field,cosmic particles coming from space can never reach the magnetic equator.
  • C
    At magnetic poles,the density of cosmic particles is maximum.
  • D
    The magnetic meridian is a straight line.

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Assume that the nuclear binding energy per nucleon $(B/A)$ versus mass number $(A)$ is as shown in the figure. Use this plot to choose the correct choice$(s)$ given below:
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