1.

An incident ray strikes a plane mirror at an angle of 15^@ with the mirror. The angle between the incident ray and reflected ray is

Answer»

`15^@`
`30^@`
`150^@`
none of these

Solution :
`anglei=90^@-15^@`
`=75^@`
`=ANGLER`
where i and r denote angles of incidence and REFLECTION RESPECTIVELY.
So, the angle between the incident and reflected rays is `150^@`.


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