Question

A small glass slab is resting on a table as shown. The area of the glass slab in contact with the table is X and the area of the table is Y. The weight of the glass slab is Q and the weight of the table is G. Which expression gives the pressure exerted on the table by the glass slab?
G/X
Q/Y
G/Y
Q/X​

Answer 1

Answer:

The real depth of the spot =12mm

We have

apparent depth

real depth

=μ

or

apparent depth

12mm

=1⋅5

or apparent depth =

1⋅5

12mm

=8mm.