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Standard XII

Physics

Finding Significant Figures

The order of ...

Question

The order of magnitude of the diameter of the earth is (Diameter of the earth is $1.28 \times 10^{7} m$ )

5

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7

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Solution

The correct option is D $7$
Order of the diameter is the earth is $7$ because we always take the power of the $10$ when numerical value is expressed in the form of "decimal after one digit and $10$ raise to the powers.

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Similar questions

Q. The diameter of the sun is

(1.4 \times 10^{9}) m

and the diameter of the earth is

(1.2756 \times 10^{7}) m

. Show that the diameter of the sun is nearly

100

times the diameter of the earth.

Find the ratio of diameter of the sun to the diameter of the earth, if the diameter of the sun and earth are $1.4 \times 10^{9}$ m and $1.275 \times 10^{7}$ m respectively.

Q. The moon is observed from two diametrically opposite points A and B on earth. The angle subtended at the moon by two directions of observation is

1^{\circ} 54^{'}

. The diameter of the earth is

1.276 \times 10^{7} m

. Calculate the distance of moon from earth.

Question 74

The diameter of Earth is 12756000 m. In 1996, a new planet was discovered, whose diameter is $\frac{5}{86}$ of the diameter of Earth. Find the diameter of this planet in km.

Q. The moon is observed from two diametrically opposite points A and B on Earth. The angle

θ

substantiated at the moon by the two direction of observation is

1^{o} 54^{'}

. Given the diameter of the Earth to be about

1.276 \times

10^7m . compute the distance of the moon from the Earth.

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The order of magnitude of the diameter of the earth is (Diameter of the earth is 1.28×107m)

The correct option is D 7Order of the diameter is the earth is 7 because we always take the power of the 10 when numerical value is expressed in the form of "decimal after one digit and 10 raise to the powers.

The order of magnitude of the diameter of the earth is (Diameter of the earth is $1.28 \times 10^{7} m$ )

The correct option is D $7$
Order of the diameter is the earth is $7$ because we always take the power of the $10$ when numerical value is expressed in the form of "decimal after one digit and $10$ raise to the powers.