The length of an elastic string is 'a' metre when the longitudinal tension is 4 N and 'b' metre when the longitudinal tension is 5 N. The length of the string in metre when the longitudinal tension is 9 N will be:

1. a - b

2. 5b - 4a

3. 2b -$\frac{1}{4}\mathrm{a}$

4. 4a - 3b

Subtopic:  Hooke's Law |
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Hooke's law is applicable for:

1. Elastic materials only

2. Plastic materials only

3. Elastomers only

4. All of these

Subtopic:  Hooke's Law |
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Two wires of copper having length in the ratio of 4: 1 and radii ratio of 1: 4 are stretched by the same force. The ratio of longitudinal strain in the two will be:
1. 1: 16
2. 16: 1
3. 1: 64
4. 64: 1

Subtopic:  Hooke's Law |
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The length of elastic string, obeying Hooke's law is ${l}_{1}$ metres when the tension is 4N, and ${l}_{2}$ metres when the tension is 5N. The length in metres when the tension is 0N will be-

1. $5{l}_{1}-4{l}_{2}$

2. $5{l}_{2}-4{l}_{1}$

3. $9{l}_{1}-8{l}_{2}$

4. $9{l}_{2}-8{l}_{1}$

Subtopic:  Hooke's Law |
To view explanation, please take trial in the course below.
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To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh