A section of X-band waveguide with dimensions a = 2.286 cm and b = 1.016 cm has perfectly conducting walls and is filled with a lossy dielectric (σd = 367.5 μS/m, εr = 2.1, μr = 1). The cutoff frequency of the TE10 dominant mode of propagation is:

Which Indian independence movement leader was primarily known for his philosophy and practice of non-violent civil disobedience?

Who gave the call for 'Do or Die' during the Quit India Movement in 1942?

Which of the following revolutionary pairs were imprisoned together in Cellular Jail and faced harsh conditions, contributing significantly to the Indian independence movement?