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Sahay Sir > Question Answers > JEE Mains Physics 2002-2019 Solved Video Solutions > Practice Set 1 > A beam of protons with speed 4 × 10^5 ms–1 enters a uniform magnetic field of 0.3 T at an angle of 60° to the magnetic field. The pitch of the resulting helical path of protons is close to (Mass of the proton = 1.67 × 10^–27 kg, charge of the proton = 1.69 × 10^–19 C)

A beam of protons with speed 4 × 10^5 ms–1 enters a uniform magnetic field of 0.3 T at an angle of 60° to the magnetic field. The pitch of the resulting helical path of protons is close to (Mass of the proton = 1.67 × 10^–27 kg, charge of the proton = 1.69 × 10^–19 C)

A gas mixture consists of 3 moles of oxygen and 5 moles of argon at temperature t. Assuming the gases to be ideal and the oxygen bond to be rigid the total internal energy of the mixture is