Question

To observe and compare the pressure exerted by an iron cuboid, the following apparatus is available in the laboratory
(1) Completely wet sand in a tray
(2) Moist sand in a tray
(3) Dry sand in a tray
(4) pebbles mixed with sand in a tray
The best choice is:
(a) 1 and 2
(b) 2
(c) 3
(d) 1 and 4

Answer 1

The best choice is option c) --> 3) Dry sand in a tray.

this apparatus is suitable to measure the depression caused more accurately