how we see objects

How many combinations of 6 objects are there, taken 4 at a time? => 15 or 24 or 360 or 4..

The Objective Function is a linear function of variables which is to be optimised i.e., maximised or minimised. e.g., profit function, cost function etc. The objective function may be expressed as a linear expressio..

The image is - formed at F 1 erect virtual diminishe..

The image is - formed at F 1 erect virtual diminishe..

Here, we consider a ray of light which is parallel to the principal axis and another ray passing through the center of curvature. The ray which is parallel to the principal axis passes through the focus and the ray which passes through the center of curvature retraces its path. The reflected rays a..

Position of object Position of image Nature of image Object at infinity Image at focus Real, inverted, small in size Object beyond 2F Image formed between F and 2F Real, inverted, smaller in size Object at 2F Image is..

The image is Formed at the focus Extremely diminished Virtual Erect Position of the object Position of the image Size of the image Nature of the image At infinity At focus Extremely diminished Virtual and erect Between infinity and pole of the mirror Betw..

We can conclude that the object with a broad base as in figure (b) is more stable than with a narrow base as in figure (a). Experiment 2: Take a narrow hollow light cylinder and place it on the table. Give it a slight push and see what happens. Repeat the experiment by sticking some..

To understand how the resistance offered by air affects the rate of fall of freely falling objects, let us consider the following experiment. Drop a pebble and a piece of paper simultaneously from the same height. The pebble will hit the ground first. Now repeat the above exper..