200J
4000J
2000J
500J
Correct answer is C
Kinetic Energy = mgh
= 20 x 10 x 10 J
= 2000J
In a reverse biased junction diode, current flows in by ...
Which of the following is true of sounds? ...
If the refractive index of crown glass is 1.51, its critical angle is?...
The magnetic force on a charged particle moving with velocity v is...
Convex spherical mirrors are preferred to plane mirrors as driving mirrors because ...
The critical angle for light traveling from a transparent medium to air s measured as 34º. The ...
The image formed by a concave mirror is real, inverted and magnified, when object is placed ...