Light Having a Speed in Vacuum Of $3.0 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s }$

question 91

Multiple Choice

Light having a speed in vacuum of $3.0 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s }$ enters a liquid of refractive index $2.0$ . In this liquid, its speed will be

• A) \(0.75 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s }\)
• B) \(6.0 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s }\)
• C) \(1.5 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s }\)
• D) \(0.67 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s }\)
• E) \(3.0 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s }\)

Differentiate between null and alternative hypotheses in the context of a one-sample Z-test.

Calculate the standard error of the mean (SEM) and understand its significance in the Z-test.

Apply critical thinking to assess the validity of test results based on Z-values and critical values.

Understand the effect of sample size and population standard deviation on the standard error of the mean.

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