Time Left:
600
sec
2. 1 fermi is equal to:
A. 10-10 m
B. 1010 m
C. 1015 m
D. 10-15 m
3. Approximate ratio of 1 fermi to 1 angstrom is ..............
A. 10-5m
B. 10-15 m
C. 10-9 m
D. 10-6 m
4. Random errors occur due to:
A. fluctuations in temperature, supply,error in reading
B. incorrect rounding off
C. imperfect design of instruments
D. parallax
6. One angstrom is equal to __________ .
A. 10-9 m
B. 10-11 m
C. 10-12 m
D. 10-10 m
7. Angstrom is the unit of
A. Time
B. Mass
C. Light
D. Length
8. Which is the most accurate atomic clock?
A. Carbon-12 clock
B. Carbon atom clock
C. Caesium atom clock
D. Stop clock
9. The method used to measure the distance of a planet from the earth is
A. Parallax method
B. Archimedes' method
C. Newton's method
D. Galileo's method
10. The most suitable instrument for measuring the size of an atom is.
A. Electron microscope
B. Vernier calliper
C. Optical Microscope
D. Screw gauge
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