NextMockપરીક્ષાઓ શોધો, દા.ત. SSC CGL, UPPSC, Lekhpal
State PCS PYQPrelims 2023

BPSC – Combined Competitive Examination · પ્રશ્ન 9

In the universe, what are pulsars?

  1. A group of stars
  2. Rotating neutron stars
  3. Explosion of a star
  4. Radio waves emitted by a star
જવાબ બતાવો અને સમજૂતી

જવાબ: (B) Rotating neutron stars

સમજૂતી

Pulsars are neutron stars whose beams sweep past Earth like a lighthouse, producing regular pulses.

  • (A) ખોટો

    Wrong: that is a cluster.

  • (B) સાચો

    Correct: pulsars are rapidly spinning, highly magnetised neutron stars emitting beams.

  • (C) ખોટો

    Wrong: that is a supernova.

  • (D) ખોટો

    Wrong: pulsars emit such waves, but they are the stars themselves.