Which equation is not dimensionally correct ?
A. E=mc2
B. Vf=Vi+at
C. S=Vt2
D. S=1/2at2
Physics Mcqs
Dimensional analysis is helpful for__________________?
Dimensional analysis is helpful for__________________?
A. Deriving a possible formula
B. Checking the homogeneity of a physical equation
C. Verification of laws
D. Only A and B are correct
ML-1 T-2 is the dimension of_______________?
ML-1 T-2 is the dimension of_______________?
A. Force
B. Pressure
C. Momentum
D. Energy
The dimension of force is__________________?
The dimension of force is__________________?
A. MLT-1
B. MLT-2
C. ML-1T
D. ML-1T-2
Smaller the least count of the instrument more is the measurement________________?
Smaller the least count of the instrument more is the measurement________________?
A. Accurate
B. Precise
C. Accurate and precise
D. None of these
Number of significant figures in 0.0173 is_________________?
Number of significant figures in 0.0173 is_________________?
A. 3
B. 4
C. 5
D. 2
A digit zero in a measurement__________________?
A digit zero in a measurement__________________?
A. May be significant may not significant
B. Always significant
C. Always insignificant sign
D. Significant only if left to a significant figure
In any measurement the significant figures are______________?
In any measurement the significant figures are______________?
A. All accurately known and all doubtful digits
B. Only accurately known digits
C. Only doubtful digits
D. All accurately known digits and the first doubtful digit
Random errors can be reduced by_______________?
Random errors can be reduced by_______________?
A. Taking zero correction
B. Comparing the instrument with another more accurate one
C. Taking mean of several measurements
D. All methods explained in A, B and C
The uncertainty in a measurement may occur due to_______________?
The uncertainty in a measurement may occur due to_______________?
A. Limitation of an instrument
B. Natural variation of the object to be measured
C. Inadequate technique
D. All given in A, B and C