Question

5. The thickness of a thin film of semi conducting material is 6.0 m. The value in km

(A) 6 x 10-6 (B) 6 x 10-³ (C) 6 x 10-9 (D) 6 × 10³

Answer 1

To convert 6.0 meters to kilometers, multiply by the conversion factor 1 x 10^-3, resulting in 6 x 10^-3 km, which corresponds to option B.

Step-by-step explanation:

The question asks about the conversion of a thickness measurement from meters to kilometers. To convert the thickness of a thin film of semi conducting material from 6.0 meters to kilometers, we use the following conversion: 1 meter = 1 x 10-3 kilometers.

Therefore, 6.0 meters would be 6.0 x 1 x 10-3 or 6.0 x 10-3 kilometers. Hence, the correct answer is (B) 6 x 10-3 km.

Answer 2

The thickness of a thin film of semi-conducting material is 6.0 m, which is equivalent to 6 x 10^-3 km.

Therefore, the correct answer is: option (B) 6 x 10^-3.

Step-by-step explanation:

The thickness of a thin film of semi-conducting material is given as 6.0 m.

To convert this value to kilometers, we need to move the decimal point three places to the left.

Or, we know that 1 km = 1000m.

=> 1m = 1 x 10 ^-3m

=> 6m = 6 x 10^-3m

Therefore, the thickness in km is 6 x 10^-3.