A 1.5-page CV (also commonly called a resume) will leave too much space and potentially make your application look unprofessional.
We recommend that you trim your CV to one page by cutting out irrelevant information like dated work experience, skills that do not apply to the role you are applying for, or unnecessary information about your education.
Alternatively, you could include some additional relevant information to make it a 2-page CV, for example by including a section on your volunteering activities or conferences you may have attended that are relevant to this position.
In general terms, if you have one or two positions that include relevant work experience, you should try to write a one or two-page CV. However, if you have three or more relevant position titles, a two- or three-page CV is acceptable. Just try not to stop your CV at a half-page mark.