Question

Sir i am in a trouble please help​

Answer 1

Answer:

i) option C

ii) option C

iii) option B

iv) option A

v) option C

Answer 2

Answer:

1.Metalloids have properties of both the metals and nonmetals (c)

2.17(c)

3.P=+4D. (a)

4.r:  (a)12 N

First of all, the earth's gravity is 9.8 ms⁻² and and the force acting on a body is 9.8N while on moon gravity is 1.62 ms⁻² and force acting on a body is 1.62N. Hence if a person with the weight 72N on earth will be 72/6 = 12N as the force acting on the moon is 1/6th the force on earth.

5.has no unit (d)

The refractive index has no units because the units cancel out when calculating the value. The refractive index is calculated by dividing the speed..