Question

In picoscale, the number of particles N in a unit volume is determined from the relation if H stands for a factor of dilution, L is scaling factor of the counter, V is measured volume and E is result display on the digital display.

(a) N = HL/VE

(b) N = H/LVE

(c) N = HV/LE

(d) N = HLV/E

The question was asked in an online interview.

The query is from Transmission of Digital Audio topic in section Telemedicine Technology of Biomedical Instrumentation

Answer 1

Correct answer is (d) N = HLV/E

For explanation: One great advantage of this instrument is that the clogging of the capillary is greatly eliminated by applying a bi-directional flow during the measurement procedure. The number of particles N in a unit volume is determined from the relation,

N = HLV/E

where

H = factor of dilution

I = scaling factor of the counter

V = measured volume

E = result displayed on the digital display.