JUST WANT YOUR 30 SECONDS..help!!

Kya koi bta sakta hai ki ye 1000 pyqs Krna sahi hai mera bass modern physics part karna bacha hai baki complete hai notes revise krke ye que direct kar lu? Ye video JM-1 ke phle ka hai toh jinhone kiya ho toh please bta do ki ye reliable hai na? Mai kisi bhi teacher ko follow nahi karta hu isliye mujhe idea nahi hai but kuch posts mai in sir ke channel ke bare mai dekha tha isliye puch rha hu.