Question

a pencil dipped obliquely in water appears bent at the surface due to dispersion is it true or false

Answer 1

not b,coz of dispersion .
A pencil dipped in water appears to be bent at the interface of air and water due to the refraction of light. 

Answer 2

its false because it causes due to the refraction of light coming from the part of the pencil that is under water and that's why it's appears bent