Physics (F.Sc)

Q: An A.C which absorb heat from its colling coil at 10°C and expels heat to out side at 40°C has coefficient of performance

(a) :  29.4
(b) :  19.4
(c) :  10.4
(d) :  9.4
(e) :  None
Answer:  9.4
Explanation:  

Q: In a charged capacitor the energy resides in

(a) :  magnetic hield
(b) :  electric field
(c) :  nuclear field
(d) :  gravitational field
(e) :  None
Answer:  electric field
Explanation:  

Q: The length of second pendulum is

(a) :  100 cm
(b) :  99 cm
(c) :  99.2 cm
(d) :  98 cm
(e) :  None
Answer:  99.2 cm
Explanation:  

Q: Which of the following properties of molecules of a gas is same for all gases at particular temperature?

(a) :  momentum
(b) :  mass
(c) :  velocity
(d) :  kinetic energy
(e) :  None
Answer:  kinetic energy
Explanation:  

Q: Phase of SHM describes

(a) :  displacement only
(b) :  direction of motion only
(c) :  both displacement and direction of motion
(d) :  neither displacement nor direction of motion
(e) :  None
Answer:  both displacement and direction of motion
Explanation:  

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