Significant Figures in Product

Q. The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate. If the maximum error in measurement of force and length are $4\%$ and $2\%$ respectively, then the maximum percentage error in the measurement of pressure is

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

Q. The Circular scale of a screw gauge has 80 equal divisions, and its pitch is 2 mm. The least count of screw gauge is

1. 0.01 mm
2. 0.25 mm
3. 0.04 mm
4. 0.025 mm

Q. Given a = 2.45 , b = 3.2 and c = 5.845, then value of $(a\times b)+c$ according to correct significant figure rule is

Q. In a particular system, the unit of length, mass and time are chosen to be $10\text{cm}$, $10\text{gm}$ and $0.1\text{s}$ respectively. The unit of force in this system will be equivalent to

1. $1/10\text{N}$
2. $1\text{N}$
3. $10\text{N}$
4. $100\text{N}$

Q. The length and the breadth of a rectangular sheet are $16.2\text{cm}$ and $10.1\text{cm}$ respectively. The area of the sheet in appropriate significant figures is

1. $164{\text{cm}}^2$
2. $163{\text{cm}}^2$
3. $163.6{\text{cm}}^2$
4. $163.62{\text{cm}}^2$

Q. The mass and volume of a body are $4.237\text{g}$ and $2.5{\text{cm}}^3$ respectively. The density of the material of the body in correct significant figures is

1. $1.6948{\text{g/cm}}^3$
2. $1.69{\text{g/cm}}^3$
3. $1.7{\text{g/cm}}^3$
4. $1.695{\text{g/cm}}^3$

Q. The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate. If the maximum error in measurement of force and length are $4\%$ and $2\%$ respectively, then the maximum percentage error in the measurement of pressure is

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

Q. The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate. If the maximum error in measurement of force and length are $4\%$ and $2\%$ respectively, then the maximum percentage error in the measurement of pressure is

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