aarvisinghrajput Asked: December 2022 what could be the consequences of a deficiency of haemoglobin in our body
aarvisinghrajput Asked: December 2022 what is meant by power of lens? write the SI unit? A student uses a lens of focal length 40 cm and
aarvisinghrajput Asked: December 2022 what do u mean by 1dioptreexplain these in the terms of focal length