## UNITS AND MEASUREMENTS QUIZ-5

JEE Advanced Physics Syllabus can be referred by the IIT aspirants to get a detailed list of all topics that are important in cracking the entrance examination. JEE Advanced syllabus for Physics has been designed in such a way that it offers very practical and application-based learning to further make it easier for students to understand every concept or topic by correlating it with day-to-day experiences. In comparison to the other two subjects, the syllabus of JEE Advanced for physics is developed in such a way so as to test the deep understanding and application of concepts.

Q1. The product PV has the dimension
•  M L-1 T-2
•  M1 L2 T-1
•  M1 L2 T-2
•  M1 L2 T-3
Solution
(c)
Pressure × volume gives work =[ML2 T-2]

Q2. Choose the physical quantity that is different from others in some respect
•  Moment of inertia
•  Electric current
•  Pressure energy
•  Rate of change in velocity
Solution
(d)
Rate of change of velocity is equal to acceleration, which is a vector quantity and all others are scalar quantities

Q3.
•  M1 L7/2 T-2
•  M1 L11/2 T-2
•  M1 L5/2 T-2
•  M1 L9/2 T-2
Solution

Q4. Dimensional formula for angular momentum is
•  M L2 T-2
•  M L2 T-1
•  M L T-1
•  M0 L2 T-2
Solution
(b) Angular momentum = mvr = [ MLT-1)][L]=[ML2 T-1]

Q5. The dimensional representation of latent heat is identical to that of
•  Internal energy
•  Angular momentum
•  Gravitational potential
•  Electric potential
Solution

Q6. The dimensional formula for Planck’s constant (h) is
•  M L-2 T-3
•  M L2 T-2
•  M L2 T-1
•  M L-2 T-2
Solution

Q7. If L,C and R represent inductance, capacitance and resistance respectively, then which of the following does not represent dimensions of frequency
•
•
•
•
Solution

Q8. While measuring the acceleration due to gravity by a simple pendulum, a student makes a positive error of 1% in the length of the pendulum and a negative error of 3% in the value of time period. His percentage error in the measurement of g by the relation g=4Ï€2 (l/T2) will be
•  2 %
•  4 %
•  7 %
•  10 %
Solution

Q9. The dimensional formula for magnetizing field H is
•  [M0 L-1 T0 A]
•  [M0 L T-3 A]
•  [M0 L T A-1]
•  [M0 L1 T-1 A]
Solution

Q10. If L and R denote inductance and resistance, respectively, then the dimensions of L/R are
•  M1 L0 T0 Q-1
•  M0 L0 T Q0
•  M0 L1 T-1 Q0
•  M-1 L T0 Q-1
Solution
(b)
Dimension of L/R is same as that of time

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