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[{ | ||
"question": "1. Quality of imaging on an insulating sample can be enhanced by:", | ||
"answers": { | ||
"a": "Increasing the pressure of chamber (lower vacuum)", | ||
"b": "Decreasing the pressure of chamber (higher vacuum)" | ||
}, | ||
"correctAnswer": "a" | ||
}, { | ||
"question": "2. Quality of imaging on an insulating sample will deteriorate when using:", | ||
"answers": { | ||
"a": "Low accelerating voltage of electron beam ", | ||
"b": "High accelerating voltage of electron beam " | ||
}, | ||
"correctAnswer": "a" | ||
}, { | ||
"question": "3. The beam damage on a polymeric sample will be high at ___________ accelerating voltage and ________ beam size.", | ||
"answers": { | ||
"a": "low accelerating voltage and smaller spot size", | ||
"b": "low accelerating voltage and bigger spot size", | ||
"c": "high accelerating voltage and smaller spot size", | ||
"d": "high accelerating voltage and bigger spot size" | ||
}, | ||
"correctAnswer": "d" | ||
}, { | ||
"question": "4. The following image is taken _______________ conductive coating on the polymeric sample.<img src='images/post6.jpg'>", | ||
"answers": { | ||
"a": "with", | ||
"b": "without" | ||
}, | ||
"correctAnswer": "b" | ||
}] |
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