Home ยป Two lenses of power +3 and -1 diopters are placed in contact. The focal length of the combined lens is Light MCQs Two lenses of power +3 and -1 diopters are placed in contact. The focal length of the combined lens is May 2, 2022 18 Views Q. Two lenses of power +3 and -1 diopters are placed in contact. The focal length of the combined lens is A. 100 cm B. 25 cm C. 50 cm D. 30.3 cm Answer: 50 cm
A man runs towards the plane mirror at 2 m/s. The relative speed of his image with respect to him will be
If a diverging lens is to be used to form an image which is one fourth of the size of the object where must the object be placed?