Question

A student conducts an experiment using a convex lens of focal length 20 cm and an object of height 15 cm. He placed the object at 25 cm from the lens. Can the image be formed on a screen? * yes, because a real image will be formed no, because a virtual image will be formed yes, because an erect image will be formed no, because an inverted image will be formed​

Answer 1

Answer:

no, because a virtual image will be formed.

Explanation:

if the object is placed behind a convex mirror then a virtual and erect image will be formed

Answer 2

If he places the object at 25 cm from the lens, then yes, the image can be formed on the screen because a real image will be formed.

• The focal length of the convex lens is given 20 cm.
• Therefore, 2F for this convex lens will be 40 cm.
• Now, the object of height 15 cm is placed at a 25 cm distance from the lens, i.e., between F and 2F.
• Hence, a real and inverted image will be formed on the other side of the convex lens. Besides this, the height of the object will be more than 15 cm.