A student places a convex lens in sunlight and notices a small bright spot forms on a paper held below the lens. What property of the lens allows this to happen?
The lens focuses parallel rays to a single point
A convex lens converges parallel rays of sunlight to a single focal point, concentrating light energy there and creating the bright spot seen on paper. Hence, the lens focusing parallel rays to a single point is correct.
Similar Questions
To get a virtual, erect and enlarged image using a spherical mirror, the object must be placed _____________.
If a lens produces an image twice as tall as the object, what is the magnification produced by the lens?
A scientist wants to demonstrate why the sky appears blue during the day and reddish at sunset using a glass tank of water, a flashlight, and a small amount of milk. Which setup best demonstrates light scattering similar to that observed in the atmosphere?
When an object is placed at 2F1 of a convex lens, where is the image formed?
The measure of an image's clarity is called _________, whereas _________ is the brightness difference between object parts.
Which of the following best describes the power of accommodation of the human eye?
An object is placed 15 cm from a concave lens of focal length 10 cm. What is the nature and position of the image formed by the lens?
With ageing, the power of accommodation of the human eye decreases, causing difficulty in viewing nearby objects clearly. This defect is known as:
Why does the sky appear blue to human observers during daytime?
Which of the following best describes the image formed by a concave mirror when the object is placed just beyond the focal point but before the center of curvature?
Important Questions from Optics
Who was the first one to use a glass prism to obtain the spectrum of sunlight?
Twinkling of stars is due to:
In which a convex mirror is used?
A. Rear View mirrors in vehicles
B. Glass windows
C. Makeup Mirror
D. Kaleidoscope
What is the reason for formation of Mirage in desert?
An object is placed 10 cm in front of a lens. The image formed is real, inverted and of same size as the object. What is the focal length and nature of the lens?
