List of top Physics Questions on Newtons Laws of Motion asked in WBJEE

Temperature of a body \( \theta \) is slightly more than the temperature of the surrounding \( \theta_s \). Its rate of cooling (R) versus temperature of the body (\( \theta \)) is plotted. Its shape would be:
A force \( \mathbf{F} = ai + bj + ck \) is acting on a body of mass \( m \). The body was initially at rest at the origin. The co-ordinates of the body after time \( t \) will be:
Acceleration due to gravity at a height of H from the surface of a plane is the same as that at a depth of H below the surface.If R is the radius of the planet, then H vs. R graph for different planets will be
A proton is projected with a velocity 107 ms-1 at right angles to a uniform magnetic field of induction 100 mT. The time (in seconds) taken by the proton to traverse 90o arc is(Mass of proton = 1.65 × 10-27 kg and charge of proton = 1.6 × 10-19 C)
A conducting sphere of radius R, carrying charge Q, lies inside an uncharged conducting shell of radius 2R. If they are joined by a metal wire, then