An object is falling vertically downwards with velocity `10m//s`.In terms of`hat i and hat j` find the image velocity. M
A
`(5sqrt(3)hat i - 5 hatj)m//s`
B
`(5sqrt(3)hat i + 5 hatj)m//s`
C
`(sqrt(3)hat i + 2 hatj)m//s`
D
none
Text Solution
Verified by Experts
The correct Answer is:
B
Image speed will also be `10m//s`. Further, image velocity will make same angle `(=60^(@))` from the mirror on opposite side of it. In terms of `hati hat j`, ` v_1=10cos 30^(@) hati+10 sin 30 ^(@)hat j` ` v_(I)=(5sqrt(3)hat i + 5 hatj)m//s`.
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