Question

Design a second experiment to test the thin lens equation. It should involve a distinctly different situation. Describe the outcome.

Answer 1

Here is the experiment to test thin lens eqaution. Remeber, this experiment has already been performed and its outcomes have been verified.

Aim -  To verify the thin-lens formula by forming the image of an object in a convex lens.

Apparatus needed -  lens holder, convex lens, an optical bench, a light-bulb socket, a low-watt light bulb, a rectangular target, a target holder, and a tape measure

Theory - we need to verfy lens equation given as

1/f = 1/d_object + 1/d_image

Procedure - 1) Place an object at a specific point and measure its distance from the center of the lens using a measuring tape.

2) Now, switch on the light source and let the rayrs travel through lens and project onto the screen. an image will be formed

3) Now, use the focal length ( it is always given along the lens) and object distance to find image distance.

4) If the image distance comes out as negative, then the image is real and inverted. In that case, magnification will be positive.

5) If the image distance is positive then image is virtual and upright. Magnification is negative.

6) Try the same procedure for different object distances.

7) For one case , place the object at focal length. you will observe that no image has formed.

8) Try different cases and use the same formula to evaluate.

Conclusion :

You can write this after performing the experiment