সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন 
With which device are earthquakes recorded?
With which device are earthquakes recorded?
- ক. Barometer
- খ. Oscillator
- গ. Voltmeter
- ঘ. Seismograph
সঠিক উত্তরঃ Seismograph
এ সম্পর্কিত আরো প্রশ্ন দেখুন
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- The household line voltage(in volt) is approximately--
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Basic Information of Daily Science, Inventions and...