Reciprocal of resistivity is called__________________?
Reciprocal of resistivity is called__________________?
A. resistance
B. inductance
C. conductivity
D. flexibility
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A uniform steel wire of length 4m and area of cross-section 3×10-6m2 is extended by 1mm by the application of a force. If the youngs modulus of steel is 2×1011 Nm-2 the energy stored in the wire is___________________?
A uniform steel wire of length 4m and area of cross-section 3×10-6m2 is extended by 1mm by the application of a force. If the youngs modulus of steel is 2×1011 Nm-2 the energy stored in the wire is___________________?A. 0.025J
B. 0.50J
C. 0.75J
D. 0.100JIn an X-ray tube electrons each of charge e are accelerated through V potential difference allowed to hit a metal target. The wavelength of the X-rays emitted is_______________?
In an X-ray tube electrons each of charge e are accelerated through V potential difference allowed to hit a metal target. The wavelength of the X-rays emitted is_______________?A. he/ev
B. he/Vc
C. eV/h
D. impossible to predictErrors in the transmission of power through optic fiber can be minimized by using a______________?
Errors in the transmission of power through optic fiber can be minimized by using a______________?A. Multimode index fiber
B. Graded index fiber
C. Single mode step index fiber
D. Copper wireThe average acceleration caused by gravity per second is____________?
The average acceleration caused by gravity per second is____________?A. 22 feet
B. 32 feet
C. 52 feet
D. 42 feetDuring the fission process a large amount of______________?
During the fission process a large amount of______________?A. Heat energy is released
B. Nuclear energy is released
C. Chemical energy is released
D. Light energy is releasedWho were the pioneers of Physics?
Who were the pioneers of Physics?A. Egyptians
B. Greek
C. Latin
D. Persians