A metallic vessel of negligible heat capacity contains 0.5 kg of water (of specific heat capacity 4200 J kg^-1 K^-1). It is heated from 15°C to 85°C by 750 W immersion heater in 4 minutes. The average loss of power in watts to the surroundings from the vessel during this time is nearly
-- A cylindrical metallic rod is in thermal contact with two reservoirs of heat,
Next-- 62. The acceleration-time graph of a particle moving along x-axis is shown. I
Which of the following is not the unit of length :
Medium-- The speed of light in a medium is 1.5 × 10⁸ m/s. The critical angle for this medium with respect
MediumThe frequency of an electromagnetic wave in free space is 2 MHz. When it passes through a medium of
Easy-- In a p-type semiconductor, the majority charge carriers are
Easy-- The energy of an electron in nth orbit of hydrogen atom is E_n = -13.6/n² eV. The energy required
Medium-- Two magnets of magnetic moments M and 2M are placed in a vibration magnetometer, with like poles
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