Podcast
Questions and Answers
What is the name of the line passing through the pole and the centre of curvature of a spherical mirror?
What is the name of the line passing through the pole and the centre of curvature of a spherical mirror?
- Principal axis (correct)
- Focal line
- Principal line
- Central axis
What is the relationship between the principal axis and the mirror's surface?
What is the relationship between the principal axis and the mirror's surface?
- The principal axis intersects the mirror's surface at an angle.
- The principal axis is perpendicular to the mirror's surface. (correct)
- The principal axis has no relationship to the mirror's surface.
- The principal axis is parallel to the mirror's surface.
Why should you not look directly at the Sun or into a mirror reflecting sunlight?
Why should you not look directly at the Sun or into a mirror reflecting sunlight?
- It can damage your eyes. (correct)
- It can cause temporary blindness.
- It can cause a fire hazard.
- It is illegal to look directly at the Sun.
What happens when you hold a concave mirror towards the Sun and focus the reflected light onto a sheet of paper?
What happens when you hold a concave mirror towards the Sun and focus the reflected light onto a sheet of paper?
What is the point where the reflected light from the Sun is focused by the concave mirror called?
What is the point where the reflected light from the Sun is focused by the concave mirror called?
How can you determine the approximate focal length of the concave mirror using the experiment?
How can you determine the approximate focal length of the concave mirror using the experiment?
What is the magnification produced by a spherical mirror?
What is the magnification produced by a spherical mirror?
What happens when a light ray travels obliquely from a denser medium to a rarer medium?
What happens when a light ray travels obliquely from a denser medium to a rarer medium?
What is the speed of light in vacuum?
What is the speed of light in vacuum?
What is the refractive index of a transparent medium?
What is the refractive index of a transparent medium?
What happens to the emergent ray when light passes through a rectangular glass slab?
What happens to the emergent ray when light passes through a rectangular glass slab?
Which of the following is the lens formula?
Which of the following is the lens formula?
What will happen if one-half of a convex lens is covered with a black paper?
What will happen if one-half of a convex lens is covered with a black paper?
An object 5 cm in length is held 25 cm away from a converging lens of focal length 10 cm. What is the position, size, and nature of the image formed?
An object 5 cm in length is held 25 cm away from a converging lens of focal length 10 cm. What is the position, size, and nature of the image formed?
A concave lens of focal length 15 cm forms an image 10 cm from the lens. How far is the object placed from the lens?
A concave lens of focal length 15 cm forms an image 10 cm from the lens. How far is the object placed from the lens?
What does a magnification of +1 produced by a plane mirror mean?
What does a magnification of +1 produced by a plane mirror mean?
A doctor has prescribed a corrective lens of power +1.5 D. What type of lens is this?
A doctor has prescribed a corrective lens of power +1.5 D. What type of lens is this?
What is the focal length of a lens with a power of -2.0 D?
What is the focal length of a lens with a power of -2.0 D?
What causes a pencil to appear displaced when partially immersed in water?
What causes a pencil to appear displaced when partially immersed in water?
If a glass slab is placed over letters, what happens to their appearance?
If a glass slab is placed over letters, what happens to their appearance?
Does the extent of the apparent displacement depend on the medium?
Does the extent of the apparent displacement depend on the medium?
What is the phenomenon responsible for the change in the direction of light when it travels obliquely from one medium to another?
What is the phenomenon responsible for the change in the direction of light when it travels obliquely from one medium to another?
In the activity with the coin at the bottom of a water-filled bucket, why was it difficult to pick up the coin in one go?
In the activity with the coin at the bottom of a water-filled bucket, why was it difficult to pick up the coin in one go?
What is the purpose of comparing experiences with friends in the coin activity?
What is the purpose of comparing experiences with friends in the coin activity?
What is the main topic discussed in the given text?
What is the main topic discussed in the given text?
Which of the following statements about the nature of light is true?
Which of the following statements about the nature of light is true?
What is the first law of reflection mentioned in the text?
What is the first law of reflection mentioned in the text?
Which of the following statements about the laws of reflection is correct?
Which of the following statements about the laws of reflection is correct?
What does the text imply about the formation of an image by a plane mirror?
What does the text imply about the formation of an image by a plane mirror?
Based on the text, what can be inferred about the scope of the chapter?
Based on the text, what can be inferred about the scope of the chapter?
