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JEE MAINS PREVIOUS YEAR-JEE MAIN 2022-Question
  1. Activity of a radio active sample is 64 xx 10^-4 dps and half life in ...

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  2. Choose correct option for EMW

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  4. In CE configuration of transistor, base current is increased from 20 t...

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  5. In photoelectric effect

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  6. If voltage across capacitor with dielectric (k=5) is 20V. Find energy ...

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  7. A wave has equation as y=0.5 sin(2pi/3 (400t-x)) with x in meters and ...

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  8. A radioactive sample has concentration 64 times the allowed level. If ...

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  9. In a medium with relative permittivity 1 and relative permeability 4, ...

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  10. Half life of a radioactive sample is 0.3010 min. The ratio of initial ...

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  11. In a potentiometer setup shown point P is point of null deflection. If...

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  12. The force required to increase the length to twice of the original len...

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  13. Two identical capacitors of 40 mu F each are connected in series. Now ...

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  14. An apple falls from height of 19.6m from a tree and a man standing dis...

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  15. Dimensional formula of (B0)^2/(2 mu) is

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  16. Efficiency of carnot cycle is 50%. Now the efficiency is increased by ...

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  17. With wavelength 560nm fringe width comes out to be 72mm in a YDSE. Now...

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  18. Radius of earth is shrink by 2% then new acceleration due to gravity i...

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  19. The value of modulation index so that signal does not get distorted

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  20. A train moves with a speed of 30 km/h with whistle frequency of 320Hz ...

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