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PHXI02:UNITS AND MEASUREMENTS

367641 If a measured quantity has $n$ significant figures, the reliable digits in it are

1

n

2

n - 1

3

2 n

4

n / 2

Explanation:

Reliable digits $=$ No. of significant figure $- 1$

PHXI02:UNITS AND MEASUREMENTS

367642 Each side of a cube is measured to be $7.203 m$ . What are the total surface area and the volume of the cube to appropriate significant figures?

1

373.7 m^{2}, 311.3 m^{3}

2

311.3 m^{2}, 373.7 m^{3}

3

273.4 m^{2}, 342.4 m^{3}

4

423.4 m^{2}, 437.4 m^{3}

Explanation:

The number of significant figures in the
measured length is 4. The calculated area and
the volume should therefore be rounded off to 4
significant figures.
Surface area of the cube
$= 6 (7.203)^{2}$ $= 311.299254$
$= 311.3 m^{2}$
Volume of the cube
$= (7.203)^{3} = 373.714754$
$= 373.7 m^{3}$

PHXI02:UNITS AND MEASUREMENTS

367643 The number of significant figures in the numbers $4.8000 \times 10^{4}$ and $48000.50$ are respectively you

1

5 and 6

2

5 and 7

3

2 and 7

4

2 and 6

Explanation:

All the non-zero digits are significant. The zero ( $s$ ) right side to the decimal point are significant. Hence, $48000 \times 10^{4}$ has 5 significant figures. All the non-zero digits are significant. All the zeros between two non-zero digits are significant, no matter where the decimal point is. Hence, 48000.50 has 7 significant figures.

KCET - 2009

PHXI02:UNITS AND MEASUREMENTS

367644 The value of resistance is $10.845 Ω$ and the current is 3.23 $A$ . On multiplying, we get the potential difference is 35.02935 $V$ . The value of potential difference in terms of significant figures would be

1

35.03 V

2

35 V

3

35.0 V

4

35.029 V

PHXI02:UNITS AND MEASUREMENTS

367641 If a measured quantity has $n$ significant figures, the reliable digits in it are

1

n

2

n - 1

3

2 n

4

n / 2

Explanation:

Reliable digits $=$ No. of significant figure $- 1$

PHXI02:UNITS AND MEASUREMENTS

367642 Each side of a cube is measured to be $7.203 m$ . What are the total surface area and the volume of the cube to appropriate significant figures?

1

373.7 m^{2}, 311.3 m^{3}

2

311.3 m^{2}, 373.7 m^{3}

3

273.4 m^{2}, 342.4 m^{3}

4

423.4 m^{2}, 437.4 m^{3}

Explanation:

The number of significant figures in the
measured length is 4. The calculated area and
the volume should therefore be rounded off to 4
significant figures.
Surface area of the cube
$= 6 (7.203)^{2}$ $= 311.299254$
$= 311.3 m^{2}$
Volume of the cube
$= (7.203)^{3} = 373.714754$
$= 373.7 m^{3}$

PHXI02:UNITS AND MEASUREMENTS

367643 The number of significant figures in the numbers $4.8000 \times 10^{4}$ and $48000.50$ are respectively you

1

5 and 6

2

5 and 7

3

2 and 7

4

2 and 6

Explanation:

All the non-zero digits are significant. The zero ( $s$ ) right side to the decimal point are significant. Hence, $48000 \times 10^{4}$ has 5 significant figures. All the non-zero digits are significant. All the zeros between two non-zero digits are significant, no matter where the decimal point is. Hence, 48000.50 has 7 significant figures.

KCET - 2009

PHXI02:UNITS AND MEASUREMENTS

367644 The value of resistance is $10.845 Ω$ and the current is 3.23 $A$ . On multiplying, we get the potential difference is 35.02935 $V$ . The value of potential difference in terms of significant figures would be

1

35.03 V

2

35 V

3

35.0 V

4

35.029 V

PHXI02:UNITS AND MEASUREMENTS

367641 If a measured quantity has $n$ significant figures, the reliable digits in it are

1

n

2

n - 1

3

2 n

4

n / 2

Explanation:

Reliable digits $=$ No. of significant figure $- 1$

PHXI02:UNITS AND MEASUREMENTS

367642 Each side of a cube is measured to be $7.203 m$ . What are the total surface area and the volume of the cube to appropriate significant figures?

1

373.7 m^{2}, 311.3 m^{3}

2

311.3 m^{2}, 373.7 m^{3}

3

273.4 m^{2}, 342.4 m^{3}

4

423.4 m^{2}, 437.4 m^{3}

Explanation:

The number of significant figures in the
measured length is 4. The calculated area and
the volume should therefore be rounded off to 4
significant figures.
Surface area of the cube
$= 6 (7.203)^{2}$ $= 311.299254$
$= 311.3 m^{2}$
Volume of the cube
$= (7.203)^{3} = 373.714754$
$= 373.7 m^{3}$

PHXI02:UNITS AND MEASUREMENTS

367643 The number of significant figures in the numbers $4.8000 \times 10^{4}$ and $48000.50$ are respectively you

1

5 and 6

2

5 and 7

3

2 and 7

4

2 and 6

Explanation:

All the non-zero digits are significant. The zero ( $s$ ) right side to the decimal point are significant. Hence, $48000 \times 10^{4}$ has 5 significant figures. All the non-zero digits are significant. All the zeros between two non-zero digits are significant, no matter where the decimal point is. Hence, 48000.50 has 7 significant figures.

KCET - 2009

PHXI02:UNITS AND MEASUREMENTS

367644 The value of resistance is $10.845 Ω$ and the current is 3.23 $A$ . On multiplying, we get the potential difference is 35.02935 $V$ . The value of potential difference in terms of significant figures would be

1

35.03 V

2

35 V

3

35.0 V

4

35.029 V

PHXI02:UNITS AND MEASUREMENTS

367641 If a measured quantity has $n$ significant figures, the reliable digits in it are

1

n

2

n - 1

3

2 n

4

n / 2

Explanation:

Reliable digits $=$ No. of significant figure $- 1$

PHXI02:UNITS AND MEASUREMENTS

367642 Each side of a cube is measured to be $7.203 m$ . What are the total surface area and the volume of the cube to appropriate significant figures?

1

373.7 m^{2}, 311.3 m^{3}

2

311.3 m^{2}, 373.7 m^{3}

3

273.4 m^{2}, 342.4 m^{3}

4

423.4 m^{2}, 437.4 m^{3}

Explanation:

The number of significant figures in the
measured length is 4. The calculated area and
the volume should therefore be rounded off to 4
significant figures.
Surface area of the cube
$= 6 (7.203)^{2}$ $= 311.299254$
$= 311.3 m^{2}$
Volume of the cube
$= (7.203)^{3} = 373.714754$
$= 373.7 m^{3}$

PHXI02:UNITS AND MEASUREMENTS

367643 The number of significant figures in the numbers $4.8000 \times 10^{4}$ and $48000.50$ are respectively you

1

5 and 6

2

5 and 7

3

2 and 7

4

2 and 6

Explanation:

All the non-zero digits are significant. The zero ( $s$ ) right side to the decimal point are significant. Hence, $48000 \times 10^{4}$ has 5 significant figures. All the non-zero digits are significant. All the zeros between two non-zero digits are significant, no matter where the decimal point is. Hence, 48000.50 has 7 significant figures.

KCET - 2009

PHXI02:UNITS AND MEASUREMENTS

367644 The value of resistance is $10.845 Ω$ and the current is 3.23 $A$ . On multiplying, we get the potential difference is 35.02935 $V$ . The value of potential difference in terms of significant figures would be

1

35.03 V

2

35 V

3

35.0 V

4

35.029 V