121. In acceleration, The dimensions for mass _____ for length _____ and for time ______
122. Dimensional formula for power is
A. \(M^{2}L^{-2}T^{-3}\)
B. \(M^{1}L^{2}T^{-2}\)
C. \(M^{1}L^{3}T^{-1}\)
D. \(M^{0}L^{2}T^{-2}\)
Answer : Option B
123. Dimensional formula for calories is
A. \(M^{1}L^{1}T^{-2}\)
B. \(M^{2}L^{1}T^{-2}\)
C. \(M^{1}L^{2}T^{-2}\)
D. \(M^{2}L^{2}T^{-2}\)
Answer : Option C
124. Dimensional formula for thermal conductivity (k) is
A. \(M^{2}L^{1}T^{-2}K^{-1}\)
B. \(M^{1}L^{1}T^{-2}K^{1}\)
C. \(M^{1}L^{0}T^{-3}K^{-1}\)
D. \(M^{1}L^{1}T^{-3}K^{-1}\)
Answer : Option D
125. Dimensional formula for Resistance (R) is
A. \(M^{1}L^{1}T^{-3}A^{-1}\)
B. \(M^{1}L^{1}T^{0}A^{-1}\)
C. \(M^{1}L^{2}T^{-3}A^{-2}\)
D. \(M^{1}L^{0}T^{-3}A^{-1}\)
Answer : Option C
126. Dimensional formula for conductance is
A. \(M^{-1}L^{2}T^{-3}A^{2}\)
B. \(M^{1}L^{2}T^{-2}A^{1}\)
C. \(M^{1}L^{-2}T^{3}A^{2}\)
D. \(M^{-1}L^{-2}T^{3}A^{2}\)
Answer : Option D
127. Which physical quantity is represented by \(M^{1}L^{3}T^{-3}\bar{A}^{2}\)
128. Which physical quantity is represented by \(M^{-1}L^{-3}T^{3}A^{2}\)
A. Resistivity
B. Resistance
C. conductance
D. conductivity
Answer : Option D
Explanation :
\(Resistivity = \frac{Resistance\times Area}{Length}\)
129. Which physical quantity is represented by \(M^{1}L^{1}T^{-3}A^{-1}\)
A. Stress
B. Resistance
C. Electricfield
D. Potential Difference
Answer : Option C
Explanation :
\(Electricfield = \frac{force}{electric charge}\)
130. The dimensional formula of plank’s constant is
A. \(M^{3}L^{2}T^{-1}\)
B. \(M^{1}L^{2}T^{-1}\)
C. \(M^{2}L^{1}T^{-1}\)
D. \(M^{1}L^{2}T^{-3}\)
Answer : Option B
Explanation :
\(plank's\ constant=\frac{mass\times (distance)^{2}}{time}\)