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Todays' Thought
Success depends upon previous preparation, and without such preparation there is sure to be failure.
- Confucius
सफलता पहले से की गयी तैयारी पर निर्भर है,और बिना ऐसी तैयारी के असफलता निश्चित है |
- कन्फ्यूशियस


    Physics Question & Answer in English

11.
First law of thermodynamics stales that.
A.  System can do work
B.  System has pressure
C.  System has energy
D.  Heat is a form of energy

12.
Velocity of sound is maximum in -
A.  Air
B.  Vacuum
C.  Water
D.  Steel

13.
In an isothermal change an ideal gas obeys.
A.  Boyle’s Law
B.  Gaylussac Law
C.  Charle’s Law
D.  None of these

14.
Electron volt is a unit of -
A.  Charge
B.  Momentum
C.  Energy
D.  Potential difference

15.
Light year is a unit of -
A.  Time
B.  Mass
C.  Energy
D.  Distance

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