Gas escapes from the surface of a planet because it acquires an escape velocity. The escape velocity will depend on which of the following factors : Mass of the planet Mass of the particle escaping Temperature of the planet Radius of the planet Select the correct answer from the codes given below: [SCRA 1994]

Gas escapes from the surface of a planet because it acquires an escape

1.	Gas escapes from the surface of a planet because it acquires an escape velocity. The escape velocity will depend on which of the following factors : Mass of the planet Mass of the particle escaping Temperature of the planet Radius of the planet Select the correct answer from the codes given below: [SCRA 1994]
A.	I and II
B.	II and IV
C.	Zero
D.	I, III and IV
Answer» D. I, III and IV