The option that contains only apparatus that could be used to determine the volume of a small block of unknown material is a measuring cylinder and a meter rule.
<h3>What is volume?</h3>
The term volume refers to the space that a substance can occupy. Now we know that the volume could be measured by the use of a graduated cylinder such as a measuring cylinder. Hence the quantity that can be measured using only a measuring cylinder is the volume of the oil.
The option that contains only apparatus that could be used to determine the volume of a small block of unknown material is a measuring cylinder and a meter rule.
The magnitude of the electric field between the membrane = surface density / permittivity of free space = 10 ⁻⁵C/ m² / (8.85 × 10⁻¹²N⁻¹m⁻²C²) = 1.13 × 10⁶ N/C approx 1 × 10⁶ N/C
