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The substance which shows practically no elastic after effect is _______?

The substance which shows practically no elastic after effect is _______?

وہ مادہ جو عملی طور پر کسی لچکدار کو ظاہر کرتا ہے وہ _____ ہے؟
Explanation
  • Quartz exhibits almost no elastic after-effect.
  • This meaning it quickly returns to its original shape after deformation.
  • Rubber and silk exhibit significant elastic after-effects.
  • This meaning they take time to return to their original form.