1.

In a parabola spectrograph, the velocities of four positive ions P,Q,R and S are v1, v2, v3 and v4 respectively

A.            \[{{v}_{1}}>{{v}_{2}}>{{v}_{3}}>{{v}_{4}}\]
B.            \[{{v}_{1}}<{{v}_{2}}<{{v}_{3}}<{{v}_{4}}\]
C.            \[{{v}_{1}}={{v}_{2}}={{v}_{3}}={{v}_{4}}\]
D.            \[{{v}_{1}}<<{{v}_{2}}>{{v}_{3}}<{{v}_{4}}\]
Answer» B.            \[{{v}_{1}}<{{v}_{2}}<{{v}_{3}}<{{v}_{4}}\]


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