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ለሁሉም አይሰራም !

1. Which proverb means it's better to be safe than sorry?
  - A) A stitch in time saves nine
  - B) Better late than never
  - C) Look before you leap
  - D) Actions speak louder than words

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Today's quiz about magnetism

What is the unit of magnetic field strength?
  - A) Tesla
  - B) Ohm
  - C) Volt
  - D) Ampere

Which of the following is a ferromagnetic material?
  - A) Copper
  - B) Aluminum
  - C) Iron
  - D) Gold

3. What is the direction of magnetic field lines outside a magnet?
  - A) North to South
  - B) South to North
  - C) East to West
  - D) Random direction


4. What is the phenomenon called when a material becomes magnetic in the presence of a magnetic field?
  - A) Electromagnetism
  - B) Magnetization
  - C) Induction
  - D) Flux


5. In which of the following types of magnets is the magnetic field produced by an electric current?
  - A) Permanent Magnet
  - B) Temporary Magnet
  - C) Electromagnet
  - D) Neodymium Magnet
 

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ስለ ምን Topic ይጠየቅ?

1. What is the logarithmic form of the equation 5² = 25?

a) log₅ 25 = 2
b) log₂₅ 5 = 2
c) log₂ 5 = 25
d) log₂₅ 2 = 5

2. If log₂ 8 = x, what is the value of x?

a) 2
b) 3
c) 4
d) 8

3. What is the value of log₁₀ 100?

a) 1
b) 2
c) 10
d) 100

4. Which of the following is NOT a property of logarithms?

a) logₐ (b⋅c) = logₐ b + logₐ c
b) logₐ (b/c) = logₐ b - logₐ c
c) logₐ bⁿ = n⋅logₐ b
d) logₐ b + logₐ c = logₐ (b+c)

5. If log₃ 9 = 2, what is the value of log₃ 27?

a) 1
b) 2
c) 3
d) 4

6. What is the value of log₂ (1/8)?

a) 3
b) -3
c) 1/8
d) 8

7. Which of the following is the equivalent logarithmic form of the equation y = 2ˣ?

a) x = log₂ y
b) y = log₂ x
c) x = logₓ 2
d) y = logₓ 2

8. The pH of a solution is defined as pH = -log₁₀[H⁺], where [H⁺] is the hydrogen ion concentration. If the pH of a solution is 4, what is the hydrogen ion concentration?

a) 10⁻⁴
b) 10⁴
c) 4
d) -4

9. What is the value of log₁₀ 0.1?

a) 1
b) -1
c) 10
d) -10

10. Which of the following is the solution to the equation log₂ (x+1) = 3?

a) 1
b) 2
c) 7
d) 8

1. Which of the following is NOT a polynomial function?

a) f(x) = 3x² + 2x - 1
b) g(x) = √x + 5
c) h(x) = x⁴ - 7x³ + 2
d) k(x) = 2x⁵ + x² - 9

2. What is the degree of the polynomial function f(x) = 5x³ - 2x² + 4x - 1?

a) 1
b) 2
c) 3
d) 4

3. What is the leading coefficient of the polynomial function g(x) = -2x⁴ + 3x² - 1?

a) -2
b) 3
c) 1
d) 4

4. What is the end behavior of the polynomial function h(x) = -x⁵ + 2x² - 3?

a) As x → ∞, h(x) → ∞; as x → -∞, h(x) → -∞
b) As x → ∞, h(x) → -∞; as x → -∞, h(x) → ∞
c) As x → ∞, h(x) → ∞; as x → -∞, h(x) → ∞
d) As x → ∞, h(x) → -∞; as x → -∞, h(x) → -∞

5. How many real zeros does the polynomial function k(x) = x⁴ - 5x² + 4 have?

a) 1
b) 2
c) 3
d) 4

6. Which of the following is a factor of the polynomial function f(x) = x³ - 2x² - 5x + 6?

a) (x - 1)
b) (x - 2)
c) (x + 3)
d) (x - 6)

7. What is the remainder when the polynomial function g(x) = x³ + 2x² - 5x + 1 is divided by (x - 2)?

a) -1
b) 1
c) 5
d) 9

8. What is the multiplicity of the zero x = -2 for the polynomial function h(x) = (x + 2)² (x - 1)?

a) 1
b) 2
c) 3
d) 4

9. What is the y-intercept of the polynomial function k(x) = 2x³ - x² + 3x - 5?

a) -5
b) 3
c) 2
d) 1

10. Which of the following polynomial functions has a graph that is symmetric about the y-axis?

a) f(x) = x³ + 2x² - 1
b) g(x) = 2x⁴ - 5x² + 3
c) h(x) = x⁵ - 4x³ + x
d) k(x) = -x⁶ + 7x⁴ - 2x² + 1

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Answer Key:

1. a) log₅ 25 = 2
2. b) 3
3. b) 2
4. d) logₐ b + logₐ c = logₐ (b+c)
5. c) 3
6. b) -3
7. a) x = log₂ y
8. a) 10⁻⁴
9. b) -1
10. c) 7

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Answer Key:

1. b) g(x) = √x + 5
2. c) 3
3. a) -2
4. b) As x → ∞, h(x) → -∞; as x → -∞, h(x) → ∞
5. d) 4
6. a) (x - 1)
7. d) 9
8. b) 2
9. a) -5
10. d) k(x) = -x⁶ + 7x⁴ - 2x² + 1