Two lenses of power +3 and -1 diopters are placed in contact. The focal length of the combined lens is HomeLight MCQsTwo lenses of power +3 and -1 diopters are placed in contact. The focal length of the combined lens isQ. Two lenses of power +3 and -1 diopters are placed in contact. The focal length of the combined lens is A. 100 cmB. 25 cmC. 50 cmD. 30.3 cm Answer: 50 cm
When angle of incidence in denser medium is greater than critical angle, will total internal reflection take place or not?
