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Find effective focal length (assume RI n...

Find effective focal length (assume RI n = 3)

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2022-Question
  1. If B = 10^9 Nm^2 and fractional change in volume is 2%. Find the volum...

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  2. Electric field strength E , max charge = q. Find K = ?

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  3. Find effective focal length (assume RI n = 3)

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  4. A l liquid drop having mass is in equilibrium in air. Electric field E...

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  5. Space between two bioconvex lens of focal length f = 40cm and mu =3/2 ...

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  6. Equation of two waves are given by y = 5 sin (wt -kx) y = 3 sin(wt...

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  7. A block is projected over a rough surface with speed 9.8 m/s. If frict...

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  8. If at the centre of circular current carrying coil, magnetic field is ...

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  9. If one end of vertical spring is connected to ground and other end is ...

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  10. Maximum speed of emitted electron during photoelectric effect from met...

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  11. Two metals M1 and M2 of thermal conductivity k1 and K2 are joined end ...

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  12. In a nuclear reaction U^220 to x^105 + y^115 binding energy per nucleo...

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  13. In a potentiometer setup a cell of emf E1 is balanced by length 75cm. ...

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  14. Two soap bubbles of radius r(1) and r(2) combine. Find radius of curva...

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  15. Statement 1- In uniform magnetic field speed and energy of a charge pa...

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  16. Find distance between first maxima in single slit diffraction pattern ...

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  17. A scaled rod of length 1m is balanced at 40cm mark as shown in figure....

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  18. A particle of mass 100g is in horizontal circular motion with the help...

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  19. Work done by Carnot engine whose heat accepted 5000Kcal from 727^@C an...

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  20. Same kinetic energy of proton, deuterium and alpha particle.Find the c...

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