वायुमण्डलीय चापमा आधारित एक यन्त्रको नाम लेख्नुहोस् । Name an instrument which works on the basis of atmospheric pressure.
SEE Class 10 Science · 2082 · Solved Question with Answer
वायुमण्डलीय चापमा आधारित एक यन्त्रको नाम लेख्नुहोस् ।
Name an instrument which works on the basis of atmospheric pressure.
