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AP EAMCET201923 Apr 2019Morning ShiftPhysicsMathematics in PhysicsActual

Assertion (A) The number 0.00764 has three significant figures. Reason (R) If the number is less than 1 , the zeros on the right of the decimal point but to the left of the first non-zero digit are not significant.

Options

  1. ABoth ((A) ) and ((R) ) are true and ((R) ) is the correct explanation of ((A) ).
  2. BBoth ((A) ) and ((R) ) are true but ((R) ) is not the correct explanation of ((A) ).
  3. C((A) ) is true but ((R) ) is false.
  4. D(A) is false but ((R) ) is true.

Correct answer

A. Both ((A) ) and ((R) ) are true and ((R) ) is the correct explanation of ((A) ).

Step-by-step solution

If the number is less than one, the zero on the right of decimal point but to the left of the first non-zero digit are not significant, i.e. in ( 0 00 764 , ) the underlined zeroes are not significant. The number of significant digit is 3 . Both assertion (A) and reason ( ( R ) ) are correct and reason ((R) ) is the correct explanation of assertion (A).

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