PhysicsEasy145×since 2002Q6560A particle is travelling 4 time as fast as an electron. Assuming the ratio of de-Broglie wavelength of a particle to that of electron is 2 : 1, the mass of the particle is :A116{1 \over {16}}161 times the mass of e^−-−B8 times the mass of e^−-−C16 times the mass of e^−-−D18{1 \over {8}}81 times the mass of e^−-−Check answerSkip