Physics - Mock Test 47

Question 461

Which of the following is not a correct representation method for prefixes?

A) 1mm B) 10km C) 1000um D) both 1⃣ and 2⃣

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Question 462

The number 76.85 is rounded off upto two significant figures as?

A) 76.8 B) 77 C) 76.9 D) none of these

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Question 463

The unmber of significant figures in the length of a bar 6200mm measured by meter rod are?

A) four B) three C) two D) none of these

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Question 464

To reduce the uncertainty in the timing experiment?

A) highly precise instrument B) conduct at room temperature C) count more number of vibration D) both a and c

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Question 465

The number of significant figures in 5.400 are?

A) three B) five C) two D) none

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Question 466

In multiplication and division of measurement?

A) percentage uncertainties are added B) absolute uncertainties are added C) percentage uncertainties are divided D) absolute uncertainties are divided

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Question 467

Zero error of the instrument is a type of?

A) random error B) personal error C) systematic error D) classified error

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Question 468

Which one is the dimensionally correct equation?

A) f=vt B) S=Vit+1/2at2 C) V=St D) V=f/t

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Question 469

Which one is the correct representation of the unit of pressure?

A) Newton/Meter2 B) newton/meter2 C) Newton/meter2 D) newton/Meter2

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Question 470

Which one is the derived quantity in SI units?

A) electric current B) electric charge C) plane angle D) amount of substance

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