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:
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:
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:
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:
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:
Explanation: