Question Detail

PHY 101 Physical Quantities And Units Objective Question
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Question

The element 133Cs is the standard for defining which of these:
Options
A Second
Correct Answer
B Meter
C Mass
D Ampere
Correct Answer

Option A is the correct answer.

Detailed Explanation

The second is defined by the radiation frequency corresponding to the transition between two hyperfine levels of the ground state of the cesium-133 atom.

Hint

Think about the atomic standard for time.

Question Info

Course: PHY 101
Topic: Physical Quantities And Units
Type: Objective
Difficulty: Not specified
Question 2 of 1250
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