147 A ray directed towards the centre of curvature of a spherical mirror a) become parallel to principal axis b)retraces its path c)appears to diverge from focus d)passes through focus. Answer : b)retraces its path...
The focal length of a concave spherical mirror is equal to 1 meter. What is the radius of curvature of this mirror? Answer : ANSWER: 2 METERS...
In case of convex lens when the image formed is real, inverted and same size as the object then the object should have been at ______ position of lens. a) infinity b)focus c)2F d)between F and 2F Answer : c)2F...
When object is placed _______ in front of convex lens than image formed is virtual, erect, magnified and on same side beyond F . a) between optical centre and F b)At F c)between F and 2F d)2F Answer : a) between optical centre and F...
A sphere of 1 cm radius is placed at the distance of 50 cm from the convex lens of 10 cn focal length. What would be the height of the image of sphere ?
50.5k questions
47.1k answers
240 comments
7.0k users
