Hots Questions

Ray Optics And Optical Instruments

- Want to initiate thinking skills? Practice Higher Order Thinking Questions
1
This question explains the real life application of image position and magnification in projectors in cinema halls.
2
Usually, we neglect the thickness of the mirror and assume that only reflection takes place. But what will happen if a point object is placed in front of a thick plane mirror? How do we locate the multiple images formed?
3
A point source of light S is placed at the bottom of a vessel containing a liquid of refracting index 5/3. A person is viewing the source from above the surface, there is an opaque disc of radius 2 cm floating on the surface of the liquid such that the center of the disc is vertically above the source S. The liquid from the vessel is gradually drained out through a tap. The maximum height of the liquid for which the source cannot be seen from above is?
5
What would be the optical nature of a spherical air bubble in water?
A spherical air bubble in water will act as a :
A
Convex lens
B
Concave lens
C
Plane glass plate
D
Plano-concave lens
6
We can easily find magnification of linear objects. But how do we find the area of the magnified image if the object is 2D shape?
7
Image formation from lens depends upon the state of object and the lens i.e. whether object or lens or both is moving or not. Let's have a look on problem to understand it in a better way.