A force F is applied on a square area of side L. If the percentage error in measurement of L is 2% and that in F is 4%, what is the maximum percentage error in pressure?

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1.
A force F is applied on a square area of side L. If the percentage error in measurement of L is 2% and that in F is 4%, what is the maximum percentage error in pressure?

1. 2%2. 4%3. 6%4. 8%

2.
The area of sheet of length 10.2 cm and width 6.8 cm addressed upto proper number of significant figures is

1. 69.36 cm22. 69.4 cm23. 69 cm24. 70 cm2

3.
The length of an iron wire is L and area of cross-section is A. The increase in length is l on applying the force F on its two ends. Which of the statements is correct?

1. Increase in length is inversely proportional to its length L2. Increase in length is proportional to area of cross section-A3. Increase in length is inversely proportional to A4. Increase in length is proportional to Young's modulus

4.
The area of cross-section of a wire of length 1.1 m is 1 mm². It is loaded with 1 kg. If Young's modulus of wire is 1.1 × 10¹¹ N/m², then the increase in length will be (if g = 10 m/s²)

1. 0.01 mm2. 0.075 mm3. 0.1 mm4. 0.15 mm

5.
Area of force-displacement graph gives

1. Total Work done2. Change in kinetic energy3. Momentum4. Both (1) & (2)

A force F is applied on a square area of side L. If the percentage error in measurement of L is 2% and that in F is 4%, what is the maximum percentage error in pressure?