Test Academy | On applying a stress of 20 x 10⁸ N / m² the length of a perfectly elastic wire is doubled. Its Young’s modulus will be 40 x 10⁸ N / m², 20 x 10⁸ N / m², 10 x 10⁸ N / m², 5 x 10⁸ N / m²

Question

On applying a stress of 20 x 10⁸ N / m² the length of a perfectly elastic wire is doubled. Its Young’s modulus will be

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