Question

What is the least count of travelling microscope

Answer 1

“0.01 mm or 0.001 cm” is the travelling microscope least count.

Solution:

Travelling microscope has the least count which is to be calculated as follows,

As we know that the travelling microscope has division present on the scale as half millimeters. That is the one division on main scale of travelling microscope be equal to 0.5 mm.

Thereby as we know that –

Least Count= $\frac{\text {One division on main scale}}{\text {Number of divisions on vernier scale}}$

One division on main scale = 0.5 mm

Number of division on vernier scale=50

Least Count = $\frac{0.5 \mathrm{mm}}{50}$ = 0.01 mm or 0.001 cm

Answer 2

Answer:

what is the least count of travelling microscope?

Answer :- LC = 0.001 cm

• the least count of an instrument is the smallest measurement which can be accurately taken from that particular instrument .

• travelling microscope is a compound microscope that is fitted on the vertical scale it carries a vernier scale along the main scale and can be moved upward Or downward.

• so the smallest division on the main scale of the travelling microscope is = 0.5mm

• number of divisions on vernier scale = 50 divisions

• the least count of a travelling microscope can be calculated as

Least count (LC) = smallest division on main scale / number of divisions on the vernier scale

• LC = 0.5/50

• LC = 0.01mm

LC = 0.001 cm.