To solve the problem of determining the power of a combination of a convex lens and a concave lens, we can follow these steps: 1. Identify the Focal Lengths: - The focal length of the convex lens (f1) is +30 cm (positive because it is a convex lens). - The focal length of the...
The focal length of this combination of lenses will be: (a) +10 cm (b) +20 cm (c) −10 cm (d) −20 cm View Solution Q4 A convex lens of focal length 10 cm is placed in contact with a concave lens of focal length 20 cm. The focal length of this combination ...
A concave mirror of focal length f1 is placed at a distance of d from a convex lens of focal length f2. A beam of light coming from infinity and falling on this convex lens concave mirror combination returns to infinity. The distance d must equal View Solution Q2 An object...
- Focal length (f) = 8 cm (positive for a convex lens) Step 2: Use the lens formulaThe lens formula is given by:1v−1u=1fSubstituting the known values into the formula:1v−1−24=18This simplifies to:1v+124=18 Step 3: Solve for 1vTo solve for 1v, we need a common ...
(3) An object is placed at a distance of 10 cm from a convex lens of focal length 12 cm. Find the position and nature of the image. Q. If an object of 10 cm height is placed at a distance of 36 cm from a concave mirror of focal length 12 cm, find the position, nature ...
In the experiment of finding the focal length of a convex lens, we should use: A. A ruler and a white paper B. A protractor and a mirror C. A ruler and a concave lens D. A protractor and a white paper 相关知识点: 试题来源: ...
Answer to: An object is 30 cm in front of a converging lens of focal length of 10 cm. Calculate the image position and draw the ray diagram. By...
Answer to: An object is 30 cm in front of a converging lens with a focal length of 10 cm. Use ray tracing to determine the location of the image...
An object is at a distance of 20 m from a convex lens of focal length 0.3 m. The lens forms an image of the object. If the object moves away from the lens at a speed of 5 m/s, the speed direction of the image will be:
<p>To find the focal length of a convex lens when it is immersed in water, we can use the lens maker's formula. The formula for the focal length <span class="mjx-chtml MJXc-display" style="text-align: center;"><span class="mjx-math"><span class="mjx-mrow