Question
If P represents radiation pressure, c represents speed of light and Q represents radiation energy striking a unit area per second, then non-zero integers x,y and z such that PxQyCz is dimensionless, are
Answer: Option B
:
B
By substituting the dimension of given quantities
[ML−1T−2]x[MT−3]y[LT−1]z=[MLT]0
By comparing the power of M,L,Tin both sides x + y = 0 .....(i)
-x + z = 0 ......(ii)
-2x - 3y - z = 0 ......(iii)
The only values of x,y,zsatisfying ((i),(ii)and (iii)corresponds to (b).
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:
B
By substituting the dimension of given quantities
[ML−1T−2]x[MT−3]y[LT−1]z=[MLT]0
By comparing the power of M,L,Tin both sides x + y = 0 .....(i)
-x + z = 0 ......(ii)
-2x - 3y - z = 0 ......(iii)
The only values of x,y,zsatisfying ((i),(ii)and (iii)corresponds to (b).
Was this answer helpful ?
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