As shown in the figure, Avinash is standing near his home.He can choose from two roads to go to school.Which way is shorter? Explain why.

As shown in the figure, Avinash is stand­ing near his house. He can choose from two roads to go to school. Which way is shorter ? Explain why.

A road network as shown in the figure connect four cites. In how many ways can you start from any city (say A) and come back to it without travelling on the same road more than once ?

A road network as shown in the figure connect four cites.In how many ways can you start from any city (say A) and come back to it without travelling on the same road more than once?

Shown in the figure is the position-time graph for two chldren (C_1 & C_2) going home from the school. Which of the following statements(s) about their relative motion is/are true after both of them started moving? Their relative velocity: (consider 1-D motion)

Shown in the figure is the position-time graph for two chldren (C_1 & C_2) going home from the school. Which of the following statements(s) about their relative motion is/are true after both of them started moving? Their relative velocity: (consider 1-D motion)

In how many ways a father can send his 4 children to 6 schools such that no two boys go to the same school.

(a) Draw graph showing the variation of current versus voltage in an electroyte when an external resistance is also connceted. (b) (i) The graph between resistance (R ) and temperature (T) for Hg is shown in the figure (a). Explain the behaviour of Hg near 4k. (ii) In which region of the graph shown in the figure (b) is the resistance negative and why?

(a) Draw graph showing the variation of current versus voltage in an electroyte when an external resistance is also connceted. (b) (i) The graph between resistance (R ) and temperature (T) for Hg is shown in the figure (a). Explain the behaviour of Hg near 4k. (ii) In which region of the graph shown in the figure (b) is the resistance negative and why?