Question

The main scale reading of a vernier calipers (1 M.S.D. = 1 mm) having least count 0.01 cm ofr the internal and external diameters of a hollow tube are 11 mm and 12 mm. the minimum thickness of the tube is......

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Answer 1

Given that,

Main scale reading = 1 mm

Internal diameters = 11 mm

External diameters = 12 mm

Least count = 0.01 cm

Least count in mm = 0.1 mm

We need to calculate the thickness of the tube

Using formula of thickness

$t=r_{ex}-r_{in}$

Where, $r_{ex}$ = external radius

$r_{in}$ = internal radius

Put the value into the formula

$t=\dfrac{12}{2}\ mm-\dfrac{11}{2}\ mm$

$t=0.5\ mm$

We need to calculate the minimum thickness of the tube

Using formula for minimum thickness

$t_{min} = t\times L.C$

L.C = least count

Put the value into the formula

$t_{min} = 0.5\times 0.1$

$t_{min} = 0.05\ mm$

Hence, The minimum thickness of the tube is 0.05 mm.

Answer 2

Answer:

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