Physics Class 9th - Measurement

How CLOSE a measurement or attempt is to the actual value is the definition of ..............

• systematic

• precision

• accuracy

• sensitivity

How CONSISTENT our results are regardless of proximity to the actual value is the definition of .......

• accuracy

• target value

• uncertainty

• precision

Which of the following shows an accurate but not precise data

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• 
• 
• 

Which of the following shows a precise but not accurate data?

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• 
• 
• 

Which of the following equation represent error in measurement?

• Error = Measured Value - True Value

• Error = 1 - True Value

• Error = True Value + Measured Value

• Error = 1 - Measured Value

Convert 962 to scientific notation.

• 96.2 x 10^-2

• 9.62 x 10^-2

• 9.62 x 10²

• 96.2 x 10²

Convert 0.002 to scientific notation.

• 20.0 x 10^-4

• 2.0 x 10^-3

• 0.2 x 10^-2

• 0.02 x 10^-1

Convert 0.000345 to scientific notation.

• 3.45 x 10^-4

• 34.5 x 10^-4

• 345 x 10^-4

• 3450 x 10^-4

Convert 500 000 000 000 000 to scientific notation.

• 5 x 10¹¹

• 5 x 10¹²

• 5 x 10¹³

• 5 x 10¹⁴

A block of cement weighs 4 kilograms. What is its weight in grams?

• 40

• 400

• 4000

• 40000