Q: 55 (CDS-I/2006)

Consider the following statements
1. Light waves can travel in vacuum.
2. Light waves can be refracted.
3. Light waves are electromagnetic.
Which of the statements given above are correct ?
question_subject: 
Science
question_year: 
2006
question_exam: 
CDS-I
stats: 
0,624,184,624,88,8,88