Figures 10.23(a) and (b) refer to the steady flow of a (non-viscous) liquid. Which of the two figures is incorrect ? Why ?:

Refer to the plot of temperature versus time (shown in the figure) showing the changes in the state of ice on heating (not to scale). Which of the following is correct?

If vec a and vec b are two collinear vectors then which of the following are incorrect :

In figure Which charge has the largest magnitude? Why?

A liquid mixture ohaving composition corresponding to point Z in the figure shown is subjected to distillation at constant pressure. Which of the following statements is correct about the process?

Shown in the figure the orientation of two vectors vecu and vecv in the xy plane if vecu = ahati+bhatj and vecv= phati+qhatj which of the following is correct?

V-I graph for a metallic wire at two different temperatuare T_1 and T_2 is as shown in the following figure. Which of the two temperature T_1 and T_2 is higher and why?

The mass of a body as measured by two students is given as 1.2 kg and 1.23 kg. Which of the two is more accurate and why?

In figure, the two graphs show the variation of electrostatic potential (V) with 1/r (r being distance of the field point form the point charge) for two point charges q_1 and q_2 Which of the two charges has a larger magnitude and why?

In the given figures which of the following two lines are parallel and why?

The variation of potential difference V with length l in the case of two potentiometers, P and Q is as shown in the figure. Which of these two will you prefer for comparing the emf's of the two primary cells?