Question

A particle of mass m is kept on a fixed, smooth sphere of radius 10 cm at a position, where the radius through the particle makes an angle 30° with the vertical. The particle is released from this position. The distance travelled by the particle before it leaves the contact with sphere is ___________ cm.​

Answer 1

$\huge \mathfrak{question}$

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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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