Which of the following is used for hearing the sound of heart and lungs...? Mcqs

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Which of the following is used for hearing the sound of heart and lungs...?

(A) Steroscope

(B) Stethoscope

(C) Oscillator

(D) Oncolator

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The cracking sound heard when dry hair is combed with a hard rubber comb is due to_________...?

(A) The hair barging against the charged comb

(B) Small electric sparks

(C) The rubbing of the comb with the hair

(D) None of the above

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