An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from

An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from the mirror. The type of mirror needed with the focal length is

Options

(a) convex mirror with focal length f=40 cm
(b) convex mirror with focal length f=20 cm
(c) concave mirror with focal length f=-40 cm
(d) concave mirror with focal length f=-20 cm

Correct Answer:

convex mirror with focal length f=40 cm

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

Related Questions

  1. Two discs of same material and thickness have radii 0.2 m and 0.6 m.
  2. If the density of earth is doubled keeping its radius constant then acceleration
  3. The work done in rotating a magnetic of magnetic moment 2 A-m² in
  4. Electrons of mass m with de-Broglie wavelength λ fall on the target in an X-ray tube.
  5. If the number of radius of ²⁷Al is 3.6 Fermi, the approximate nuclear radius