Conduction, since the iron is in direct contact with the clothes.
The correct answer is option A.
The Gamma waves emitted from radioactive decay have a frequency of around 10¹⁹ Hz, which is much greater compared to the alpha of beta waves.
The frequency is directly proportional to the energy of the waves as given by the equation,

Where E is the energy, h is the Planck's constant, and f is the frequency.
Thus the gamma waves have a lot of energy compared to the other options.
Thus the correct answer is option A.
Answer:
(A) 5.8×10-⁴V/m
(B) 1.13×10-⁴V/m
Explanation:
Please see attachment below.
Answer:
32 J
Explanation:
Power is V²/R = 20²/1500 = 4/15 . . . watts
In 120 seconds, the energy is ...
(4/15 J/s)×(120 s) = 32 J
In a 2-minute period 32 joules are dissipated as heat.