Q. Which type of expansion occurs in solids?

ठोसों में किस प्रकार का विस्तार होता है?

A
Linear only
केवल रैखिक
B
Areal only
केवल एरियाल
C
Volumetric only
केवल वॉल्यूमेट्रिक
D
All of these
इन सब

Explanation

Solids exhibit all three types of thermal expansion depending on the dimensional context:

  • Linear expansion: Change in length (e.g., metal rods).

  • Areal (superficial) expansion: Change in area (e.g., metal sheets).

  • Volumetric expansion: Change in volume (e.g., solid blocks).

Thus, the correct choice is all of these.

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