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Questions : 28 & 29
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Kumar Ketan is teaching live on Unacademy Plus

Kumar Ketan
#6 years teaching experience #Physics Faculty in Kota #"magical education" (200k+ subs) #Follow for Physics of JEE NEET AIIMS etc. #Writer

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sir pls answer 2 spherical enclosures having same volume, both of them are filled with air , temperatures are same , p1 = 2 bar p2 = 4 bar. Now if we give same amount of heat to both the containers In which one the temperature rise will be more or will it be the same in both the containers.
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  1. unacademy All Structured live courses Complete Physics Chemistry & Math Weekly quizzes & doubt clearing plus KUMAR KETAN Referral ID: KumarKetan

  2. An inductive circuit draws a power 550 W from a 220 V-50 Hz source. The power factor of the circuit is 0.8. The current in the circuit lags behind the voltage. To bring its power factor to unity the capacitor connected in the circuit must have capacitance (b) 4224Tt F 8448 (c) 8448Tt F 4224

  3. Circuit is inductive, i.e., there is no capacitor in the circuit. Given power factor 3 4 2 Power, P= R (220)2 R 2 3 4 550- R= 56.32

  4. Now to bring the power factor to unity, 3 4 4 3>< 2 50 56.32 4224

  5. A neutron ofenergy 1 Me V and mass 1.6 x 10 27 kg passes a proton at such a distance that the angular momentum of neutron relative to proton approximately equals 10 J s. The distance of closest approach neglecting the interaction between particles is (a) 0.44 mm (c) 0.44 A (b) 0.44 nm (d) 0.44 fm

  6. If d is the distance of closest approach given, the angular momentum mvd 1033J s E mv 1 MeV 1.6 x10-13J p=y2m1nE =V2 1.6 10-27 1.6 10-13 = 1.6V2 10-20 kg m s-1 2 Distance of closest approach, 10 x10 13 0.44 fm 1602 10-20-1.6V2