1.A person cannot see clearly objects at a distance less than 100 cm100\,\text{cm}100cm. The power of the spectacles required to see clearly objects at 25 cm25\,\text{cm}25cm isa.+1 D+1\,\text{D}+1Db.+3 D+3\,\text{D}+3Dc.+4 D+4\,\text{D}+4Dd.+2 D+2\,\text{D}+2DLogin to continueOnly logged in users canattempt or see the solution.
