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Friday, 2 December 2016

Chapter no. 03 logarithms

Chapter no. 03   logarithms

Q: 1   Choose the correct answer
1.        The characteristics of log 19 are =                            .
a-) 0                                                                                                       b-) 10
c-) 2                                                                                                       d-) 1
2.       The base of common logarithms is =                                       .
a-) 2                                                                                                       b-) e
c-) 1                                                                                                       d-) 10
3.       The standard form of 2.35 × 10-2 is                                            .
a-) 500                                                                                                  b-) 0.235
c-) 700                                                                                                   d-) 1000
4.       If x = log 3 243 then ‘x’ will be                                    .
a-) 3                                                                                                       b-) 243
c-) 7                                                                                                       d-) 5
5.       The characteristic of 0.00345 is =                                               .
a-) -1                                                                                                     b-) -2
c-) -3                                                                                                      d-) 1
6.       If log x y/ log x z is =                                          .
a-) log x y                                                                                             b-) log y z
c-) log x y z                                                                                           d-) log z y x
7.       The radius of the earth is 640000m, its scientific notation is =                                     .
a-) 64 × 106 m                                                                                     b-) 6.4 × 10 6
c-) 6.4 × 10 -6                                                                                       d-) 64 × 10 -6


8.       Log 12 can be written as                                 .
a-) log2 × log6                                                                                   b-) 3log4
c-) log3 × log4                                                                                    d-) 2log2 + log 3
9.       The standard form of 9.99×10-4 is                                               .
a-) 0.000999                                                                                        b-) 0.00999
c-) 0.999                                                                                               d-) 0.0999
10.   The number of digits in 55                              .                            
a-) 3                                                                                                       b-) 4
c-) 2                                                                                                       d-) 1
11.   Base in common logarithm is                      .
a-) ℮                                                                                                     b-) 10
c-) Hypotenuse                                                                                                d-) ∏
12.   Three is the characteristic of                                       number.
a-) 879.2                                                                                               b-) 87.92
c-) 8.972                                                                                               d-) 8792
13.   The logarithmic form of a8 = x is                                               .
a-) log 8 x                                                                                             b-) log x 8
c-) log x a                                                                                            d-) log a x
14.   Log 2 =                                  .
  a-) 0.3010                                                                                          b-) 3.017
 c-) 3.862                                                                                              d-) 2.562
15.   Log 729 =                                              .
a-) 2.762                                                                                               b-) 2.862
c-) 3.862                                                                                               d-) 2.562




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