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Todays' Thought
Those who cannot change their minds cannot change anything.
- George Bernard Shaw
जो अपना दिमाग नहीं बदल सकते वे कुछ भी नहीं बदल सकते |
- जार्ज बर्नार्ड शा


    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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