NextMockపరీక్షలు వెతకండి, ఉదా. SSC CGL, UPPSC, Lekhpal
State PCS PYQPrelims 2022

BPSC – Combined Competitive Examination · ప్రశ్న 91

What type of lens is used in a magnifying glass?

  1. Plano-concave
  2. Convex lens
  3. Convex mirror
  4. Concave lens
  5. None of the above / More than one of the above
సమాధానం చూపించు & వివరణ

సమాధానం: (B) Convex lens

వివరణ

A simple magnifier is a convex lens held so the object is within its focal length.

  • (A) తప్పు

    Wrong: concave lenses diminish.

  • (B) సరైనది

    Correct: a convex lens gives a magnified virtual image when the object is within focus.

  • (C) తప్పు

    Wrong: a mirror, not a lens.

  • (D) తప్పు

    Wrong: diminishes images.

  • (E) తప్పు

    Wrong: only one of the options A–D is correct.