// Numbas version: finer_feedback_settings
{"name": "Sound Pressure Level", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"functions": {}, "ungrouped_variables": [], "name": "Sound Pressure Level", "tags": ["check", "rebelmaths"], "advice": "<p>Use the formula SPL=$20 \\times log_{10}(\\frac{\\text{pressure in Pa}}{20 \\times 10^{-6}})$, where SPL is the sound pressure level.</p>", "rulesets": {}, "parts": [{"matrix": ["3", 0, "0", 0], "shuffleChoices": true, "marks": 0, "variableReplacements": [], "choices": ["<p>76.3 dB</p>", "<p>43.7 dB</p>", "<p>3.74 dB</p>", "<p>81.1 dB</p>"], "variableReplacementStrategy": "originalfirst", "displayType": "radiogroup", "maxMarks": 0, "scripts": {}, "distractors": ["", "", "", ""], "displayColumns": 0, "showCorrectAnswer": false, "type": "1_n_2", "minMarks": 0}], "extensions": [], "statement": "<p>The sound pressure recorded by an oboe player in an orchestra was 0.13 Pa. The sound pressure level was:</p>", "variable_groups": [], "variablesTest": {"maxRuns": 100, "condition": ""}, "preamble": {"css": "", "js": ""}, "variables": {}, "metadata": {"description": "<p>rebelmaths</p>\n<p>Sound Pressure Level</p>", "licence": "Creative Commons Attribution 4.0 International"}, "type": "question", "showQuestionGroupNames": false, "question_groups": [{"name": "", "pickingStrategy": "all-ordered", "pickQuestions": 0, "questions": []}], "contributors": [{"name": "Clodagh Carroll", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/384/"}], "resources": []}]}], "contributors": [{"name": "Clodagh Carroll", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/384/"}]}