Question

49. Figure shows the position of a particle moving on
the x-axis as a function of time
153.
(m)
204
10
t(s)
0 2 4 6 8
Vy The particle has come to rest 4 times
(2) The velocity at t = 8 s is negative
3 The velocity remains positive for t = 2 s to
t = 6 5
(4) The particle moves with a constant velocity
​

Answer 1

$\huge \mathfrak{question}$

⤵⤵

Give reasons for the following:-

1. In the d-block Elements the size is on almost comparable, that is, there is no significant change in the size.

2. In group-13, Boron to Aluminium size increases but from Aluminium to Gallium size decreases and again from Gallium to Indium size increases but from Indium to Thallium, there is very slight increase in size.

3. In the f-block, left to right size decreases very sharply.

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