Math 9th Chap 2 : Topic 2 - Maryam Publications

Math Chapter 2 : Topic 2

Logarithms

1 / 22

What does $\log_{10}100$ equal?

A) $10$

B) $100$

C) $1$

D) $2$

2 / 22

Which expression is equivalent to $\log_{10}x = 3$?

A) $x = 3^{10}$

B) $x = 3^{10}$

C) $x = 10/3$

D) $x = 10^{3}$

3 / 22

The value of $\log_{10}\ 1$ is:

A) $0$

B) $- 1$

C) $1$

D) Undefined

4 / 22

Which statement correctly defines a logarithm?

A) Division of two numbers

B) Square root of a number

C) Power of a number in multiplication

D) Exponent to which a base is raised to get a number

5 / 22

If $\log_{10}\ 1000 = x$, then $x$ is:

A) $2$

B) $3$

C) $4$

D) $10$

6 / 22

Which of the following is $NOT$ valid for logarithms?

A) $\log_{10}\ 10 = 1$

B) $\log_{10}\ 100 = 2$

C) $\log_{10}\ 0 = 1$

D) $\log_{10}1 = 0$

7 / 22

If $\log_{10}\ x = 0$, then $x$ is:

A) $100$

B) $0$

C) $10$

D) $1$

8 / 22

What is the base of common logarithm?

A) $e$

B) $2$

C) $5$

D) $10$

9 / 22

If $\log_{10}\ 10000 = x$, then $x$ equals:

A) $4$

B) $3$

C) $5$

D) $2$

10 / 22

Which number has logarithm equal to $1$?

A) $0$

B) $100$

C) $1$

D) $10$

11 / 22

Which is correct?

A) $\log_{10}\ 50 = 0$

B) $\log_{10}\ 50 = 5$

C) $\log_{10}\ 50\ is\ between\ 1\ and\ 2$

D) $\log_{10}\ 50 = 50$

12 / 22

If $x = \log_{10}\ 100$, then $10^{x}$ equals:

A) $1$

B) $10$

C) $100$

D) $1000$

13 / 22

Which value is negative in logarithm?

A) $\log_{10}\ 0.5$

B) $\log_{10}\ 2$

C) $\log_{10}\ 5$

D) $\log_{10}\ 10$

14 / 22

Which is true?

A) Logarithm converts multiplication into addition

B) Logarithm converts addition into multiplication

C) Logarithm has no relation with exponents

D) Logarithm converts subtraction into division

15 / 22

If $\log_{10}\ x = 2$, then $x$ is:

A) $20$

B) $10$

C) $200$

D) $100$

16 / 22

What is $\log_{10}\ 0.01$?

A) $- \ 1$

B) $1$

C) $- \ 2$

D) $2$

17 / 22

Which number has logarithm $3$?

A) $1000$

B) $10000$

C) $100$

D) $10$

18 / 22

Which statement is correct about logarithms?

A) Always positive

B) Always zero

C) Always negative

D) Can be positive or negative

19 / 22

If $\log_{10}\ x = - \ 1$, then $x$ is:

A) $100$

B) $10$

C) $0.1$

D) $1$

20 / 22

Logarithm is the inverse of:

A) Division

B) Multiplication

C) Subtraction

D) Exponentiation

21 / 22

Which number has the greatest logarithm?

A) $100$

B) $1$

C) $0.1$

D) $10$

22 / 22

If $\log_{10}5 = a$, then $\log_{10}\ 50$ equals:

A) $a + 1$

B) $a - 1$

C) $10a$

D) $a^{2}$

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