Question

write in set builder form N=(4,8,12,16,20,24,28,32)​

Answer 1

Step-by-step explanation:

Given:u=−10cm               f=20cm        (convex lens)

To find: v and image's nature.

Solution: From lens formula

v1−u1=f1

v1+101=201

v1=20−1

v=−20cm

And magnification = uv=2

Hence image formed is virtual, erect and magnified two times.

Answer 2

Answer:

(x E N) ×:× is a multiplication of 4 less than 36