Question 14 Marks
In a bacteria culture under observation in a laboratory, the population of 50 bacteria doubles itself every hour.
Q.1. Which of the following expressions gives the bacterial population after n hours?
(a) $\frac{50}{2^n}$$\quad$$\quad$ (b) $25^n$ $\quad$$\quad$(c) $50 \times 2^n$$\quad$$\quad$ (d) $\frac{50^n}{2}$
Q.2. The population size of the bacteria after 3 hours will be
(a) 200 $\quad$$\quad$(b) 300 $\quad$$\quad$(c) 400 $\quad$$\quad$(d) 500
Q.3. How many bacteria will be there in the culture after 1 day?
(a) $\frac{50}{2^{12}}$ $\quad$$\quad$(b) $50 \times 2^{24}$$\quad$$\quad$ (c) $50 \times \times 2^{12}$ $\quad$$\quad$(d) $\frac{50}{2^{24}}$
Q.4. If the culture is observed after every one hour, find the number of hours after which the population size of the bacteria will be larger than 1000.
(a) 5 $\quad$$\quad$(b) 6 $\quad$$\quad$(c) 8 $\quad$$\quad$(d) 10
Q.1. Which of the following expressions gives the bacterial population after n hours?
(a) $\frac{50}{2^n}$$\quad$$\quad$ (b) $25^n$ $\quad$$\quad$(c) $50 \times 2^n$$\quad$$\quad$ (d) $\frac{50^n}{2}$
Q.2. The population size of the bacteria after 3 hours will be
(a) 200 $\quad$$\quad$(b) 300 $\quad$$\quad$(c) 400 $\quad$$\quad$(d) 500
Q.3. How many bacteria will be there in the culture after 1 day?
(a) $\frac{50}{2^{12}}$ $\quad$$\quad$(b) $50 \times 2^{24}$$\quad$$\quad$ (c) $50 \times \times 2^{12}$ $\quad$$\quad$(d) $\frac{50}{2^{24}}$
Q.4. If the culture is observed after every one hour, find the number of hours after which the population size of the bacteria will be larger than 1000.
(a) 5 $\quad$$\quad$(b) 6 $\quad$$\quad$(c) 8 $\quad$$\quad$(d) 10
Answer
View full question & answer→1. (C)
2. (C)
3. (B)
4. (A)
2. (C)
3. (B)
4. (A)