Optical Instruments
Physics ⇒ Light and Optics
Optical Instruments starts at 10 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Optical Instruments.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 10
A person with myopia uses a lens of power -2 diopters. What type of lens is it?
Describe the function of the eyepiece in a telescope.
Explain the role of the objective lens in a compound microscope.
Explain why a reflecting telescope is preferred over a refracting telescope for astronomical observations.
Explain why the image formed by a simple microscope is virtual.
Name the part of the human eye that controls the amount of light entering the eye.
Name the two main types of telescopes based on the principle they use to collect light.
State one difference between a simple microscope and a compound microscope.
The image formed by a simple microscope is: (1) Real and inverted (2) Virtual and erect (3) Real and erect (4) Virtual and inverted
The main function of a telescope is to: (1) Magnify small objects (2) View distant objects (3) Measure temperature (4) Measure mass
Which instrument is used to examine the internal parts of the human body using light? (1) Periscope (2) Endoscope (3) Microscope (4) Telescope
Which instrument is used to take photographs? (1) Microscope (2) Camera (3) Telescope (4) Periscope
A camera forms an image on a ________.
A simple microscope is also known as a ________.
The least distance of distinct vision for a normal human eye is about ________ cm.
The magnifying power of a compound microscope is the product of the magnifying powers of the ________ and the ________.
True or False: A compound microscope uses only one lens to magnify objects.
True or False: Binoculars are essentially two refracting telescopes placed side by side.
True or False: The human eye can adjust its focal length to focus on objects at different distances.
True or False: The image formed by a camera is real and inverted.
