The stretch in a steel rod of circular section, having a length ?l' subjected to a tensile load 'P' and tapering uniformly from a diameter \[{{d}_{1}}\] at one end to a diameter \[{{d}_{2}}\] at the other end, is given:

\[\text{Pl/4}\,E{{d}_{1}}{{d}_{2}}\]

\[\text{Pl}\,\pi \,E{{d}_{1}}{{d}_{2}}\]

\[\text{Pl/4}E({{d}_{1}}.{{d}_{2}})\]

\[\text{4P}\text{.l/}\pi \text{.}E.{{d}_{1}}.{{d}_{2}}\]

The stretch in a steel rod of circular section, having a length ?l' su

1.	The stretch in a steel rod of circular section, having a length ?l' subjected to a tensile load 'P' and tapering uniformly from a diameter \[{{d}_{1}}\] at one end to a diameter \[{{d}_{2}}\] at the other end, is given:
A.	\[\text{Pl/4}\,E{{d}_{1}}{{d}_{2}}\]
B.	\[\text{Pl}\,\pi \,E{{d}_{1}}{{d}_{2}}\]
C.	\[\text{Pl/4}E({{d}_{1}}.{{d}_{2}})\]
D.	\[\text{4P}\text{.l/}\pi \text{.}E.{{d}_{1}}.{{d}_{2}}\]
Answer» E.

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The stretch in a steel rod of circular section, having a length ?l' subjected to a tensile load 'P' and tapering uniformly from a diameter \[{{d}_{1}}\] at one end to a diameter \[{{d}_{2}}\] at the other end, is given:

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