Question

What is the least count of the following instruments?
(a) Metre scale
(b) Wall clock
(c) Celsius thermometer
(d) Vernier calliper​

Answer 1

What is the least count of the following instruments?

(a) Metre scale

(b) Wall clock

(c) Celsius thermometer$\green{✔}$

(d) Vernier calliper

$\small \sf \pink{Correct \: answer:}(c) Celsius \: thermometer \: 0.1 \degree \:C$

Answer 2

a) metre scale :- 1mm(o.1mm)

b) wall clock :- 1 second (s)

c) Celsius thermometer:- 1/5 or o.2 degree Celsius

d) vernier calliper :- 0.1 mm

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