JEE Main 2023 April 6 (Shift-1 Morning) Physics Question Paper with Solutions | Memory Based

JEE Main 2023 April 6 (Shift-1 Morning) Physics Question Paper with Solutions | Memory Based 

Ques 1.   Find  the radius of  5th orbit of  a Li+2  ion.  Radius of first orbit of  H atom is 0.529Å.

Ans.      4.408 Å

Ques 2.   What is the moment of  inertia of  a rod about the axis passing through its one end?










Ques 3.   Assertion: For  a projectile motion, range is maximum at q = 45°.

                Reason:  For  range to be maximum, sin2q needs to be 1.


Ans. Both are true





Ques 4.   Which  graph   represents  the  relationship    between  conductivity    and  temperature   for    a semiconductor?











For semiconductor on increasing temperature, n increase & t decreases. But effect of n is dominating, So graph will be

Ques 5.     In a thermodynamics process, wok done by the gas is 1000 J, heat released during the process is 200 J. Find the change in internal energy.
Ans. 1200J 





Ques 6.    In the given setup, if the block is slightly displaced it undergoes SHM. Find its time period.






Ques 7.  Centers of two spheres of mass 2 kg and radius 10 cm are connected with a massless rod of 40 cm. Find the moment of inertia about an axis passing through the center of the rod.

Ans. 0.176

Sol. diagram 



Ques 9.   Identify the logic gate in the given arrangement.















Ques10.  The ratio of average electric energy density and magnetic energy density in electromagnetic wave is equals to:
 Ans. 1 : 1







Ques11.  If the height of a tower used for LOS communication is increased by 21%. Find the percentage change in range.

Ans. 10%







Q12















Q13










































Ques15. We stretch a wire of resistance R such that its length increases by 20%. Then the percentage change in its resistance will be?

 Ans. 44%



















Ques17.  Which graph represents the potential inside a hollow sphere.
























































Ques 23.  A conducting coil is present in a constant magnetic filed. The current will induce in the coil in which of the given situation? (A) moving with constant velocity (B) moving with non uniform velocity (C) rotating about it’s diameter (D) none of these

Ans. (C)






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