Lesson 1.06c

1.06c Logarithms Quiz: OCR Maths, Unit 6

20 questions

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Lesson 1.06c, Logarithms: 20 multiple choice questions for the OCR Maths (H240), Unit 6: Exponentials and Logarithms, written with Revision Ninja.

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The 20 questions

  1. Which statement is the logarithmic form of 2^5 = 32?

    • log_32 2 = 5
    • log_2 32 = 5
    • log_2 5 = 32
    • log_5 32 = 2
  2. What is the value of log_a a for a positive, a not 1?

    • a
    • 0
    • -1
    • 1
  3. What is the value of log_7 1?

    • 7
    • 1
    • -1
    • 0
  4. What is the value of ln e?

    • -1
    • 0
    • e
    • 1
  5. Which law applies to log_a x + log_a y?

    • log_a(xy)
    • log_a(x + y)
    • log_a(x/y)
    • (log_a x)(log_a y)
  6. Which expression equals k log_a x?

    • log_a(x)/k
    • (log_a x)^k
    • log_a(kx)
    • log_a(x^k)
  7. What is ln(e^3)?

    • 3
    • ln 3
    • 1
    • e^3
  8. Evaluate log_2 8.

    • 8
    • 3
    • 2
    • 4
  9. Evaluate log_10 0.001.

    • -0.3
    • 3
    • -1/3
    • -3
  10. Simplify log_3 18 - log_3 2.

    • log_3 16
    • 2
    • log_3 20
    • 8
  11. Solve log_2 x + log_2 (x + 2) = 3 for x > 0.

    • x = 2 or x = -4
    • x = 4
    • x = -4
    • x = 2
  12. Write 3 ln 2 + ln 5 as a single logarithm.

    • ln 13
    • ln 10
    • ln 40
    • ln 15
  13. Evaluate log_5 125.

    • 5
    • 1/3
    • 25
    • 3
  14. To 3 decimal places, what is log_10 2?

    • 0.301
    • 0.693
    • 0.500
    • 0.200
  15. If log_10 x = 3, what is x?

    • 1000
    • 300
    • 6
    • 30
  16. How many real solutions exist for the logarithmic equation 2 log_3 x - log_3 (x - 4) = 2?

    • Zero
    • Infinite
    • One
    • Two
  17. Make y the subject of ln y = 2x + 1.

    • y = e^(2x + 1)
    • y = 2x e
    • y = ln(2x + 1)
    • y = e^(2x) + 1
  18. If log_2 a = 3 and log_2 b = 5, what is log_2(a^2 b)?

    • 13
    • 15
    • 8
    • 11
  19. Evaluate ln(e^2 x sqrt(e)).

    • 3
    • 2.5
    • 1.5
    • 2
  20. Given log_a 2 = p and log_a 3 = q, express log_a 36 in terms of p and q.

    • p + q
    • 2pq
    • 2p + 2q
    • p^2 + q^2

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