Question Bank: Light – Reflection and Refraction

What are the laws of refraction of light?

Define the refractive index of a medium.

How does the speed of light vary in different media?

Explain the concept of optical density in terms of refractive index.

How is the refractive index of a medium with respect to vacuum calculated?

What is the absolute refractive index of a medium?

Describe the phenomenon of refraction of light.

Explain the apparent displacement of objects in different media.

What is Snell's law of refraction?

How is the refractive index related to the speed of light in different media?

Discuss the difference between optically rarer and denser media.

How does a concave mirror form an image of an object?

Calculate the focal length of a convex mirror with a radius of curvature of 32 cm.

How is the magnification of an image calculated?

Explain the formation of a real image by a concave mirror.

What is the nature of the image formed by a concave mirror when the object is placed at 10 cm in front of it?

Describe the phenomenon of an object appearing raised when viewed through a glass slab.

Why does a pencil appear displaced when partly immersed in water?

Compare the effects of different liquids on the apparent displacement of objects.

How does the direction of light change when traveling obliquely from one medium to another?

Discuss the activity of trying to pick up a coin at the bottom of a bucket filled with water.

Explain the activity of observing a coin in a bowl of water as you move away from it.

Discuss the concept of refraction of light in everyday experiences.

What are the laws of refraction of light?

Define the refractive index of a medium.

What happens to the speed of light when it enters a denser medium?

If a ray of light travels from air into water, it bends towards the normal due to:

What is the value of the refractive index of a medium if the speed of light in vacuum is 3 × 10^8 m/s and in the medium it is 2 × 10^8 m/s?

When light enters a glass slab perpendicularly, how does it behave?

Which phenomenon causes the bottom of a pond to appear raised?

If the angle of incidence in air is 30 degrees, and it enters glass making an angle of refraction of 22 degrees, what is the refractive index of glass?

What happens to a pencil appearing bent when it is immersed in water?

Light rays emerging from a glass slab are parallel to the incident rays because of:

What is the angle of refraction when light travels from a medium with a refractive index of 1.5 into a vacuum (refractive index of 1)?

When a light ray hits the boundary of two media, which statement about the normal is true?

Which of the following statements is true regarding Snell's law?

A lamp placed underwater appears higher than its actual position due to:

When light passes from air to glass, what happens to the waves?

What does the law of reflection state?

Which of the following mirrors always produces a virtual image?

What is the focal length of a concave mirror with a radius of curvature of 30 cm?

Which type of mirror is commonly used as a rear-view mirror in vehicles?

If an object is positioned within the focal length of a concave mirror, what type of image is formed?

The image formed by a concave mirror is larger than the object when:

Which of the following statements about the image in a convex mirror is true?

What type of image does a plane mirror produce?

Which is NOT a characteristic of images formed by spherical mirrors?

What is meant by the term 'pole' in the context of a mirror?

What is the magnification of an image that is the same size as the object?

Which convex mirror characteristic helps drivers see more area behind them?

Which scenario describes a real image?

The distance from the mirror to the principal focus for a convex mirror is:

What occurs when light passes from air into water?

According to Snell's Law, what is constant when light passes between two media?

If a ray of light travels from glass into air, which of the following is true?

What does the refractive index of a medium tell us?

Which of the following phenomena is a result of refraction?

What happens to the angle of incidence when light enters a denser medium?

Which condition would likely increase the refraction of light?

What does total internal reflection depend on?

What is the relationship between the refractive indices of two media in terms of light speed?

When viewing underwater, why does a straight object appear bent?

What would happen to light rays that are incident at a 90-degree angle to the interface of two media?

The phenomenon where light appears raised when viewed through a thick glass slab is due to?

Which statement about light traveling through different media is false?

What type of lens is thicker at the middle than at the edges?

What is the focal point of a convex lens?

When light passes through the optical center of a lens, what happens to its path?

What term is used to describe the distance from the optical center to the focal point?

Which of the following describes a concave lens?

Which statement about the principal axis of a lens is true?

A ray of light hits the surface of a concave lens at an angle. What will happen to the ray?

How does increasing the curvature of a lens affect its focal length?

What do we call the light rays that are parallel to the principal axis before entering a lens?

What happens to light rays when they pass through a double concave lens?

What is the relationship between the refractive index and the speed of light in a medium?

When parallel rays of light pass through a convex lens, where do they converge?

If the focal length of a lens is increased, what effect would this have on magnification?

What occurs at the principal focus of a concave lens?

When comparing a convex and a concave lens, which statement is true about their respective effects on light?

According to the New Cartesian Sign Convention, which axis is taken as the principal axis?

If the focal length of a spherical mirror is -10 cm, what type of mirror is it?

The radius of curvature of a concave mirror is 30 cm. What is the focal length?

An object distance (u) is given as -20 cm in a concave mirror. Which of the following options is true about its distance?

If the image distance (v) from a convex mirror is +5 cm, what can be said about the image?

The magnification (m) produced by a spherical mirror is negative. What does this indicate?

Which of the following equations correctly represents the mirror formula?

The height of an object (h) is +5 cm. What would the height of its real image be according to sign conventions?

What does a positive focal length tell about the mirror?

If the image distance of a concave mirror is 20 cm, how would you classify the image?

The object distance of an object placed in front of a convex mirror is given as +30 cm. How do you classify this situation?

Using the mirror formula, what would be the image distance (v) if object distance (u) is -10 cm and focal length (f) is -5 cm?

What is the power of a convex lens with a focal length of +0.25 m?

If a concave mirror produces a virtual image, which of the following must be true about the object distance?

If the magnification of a concave mirror is +2, what does this indicate about the image?

A convex mirror has a radius of curvature of 2m. What is its focal length?

What is the focal length of a concave mirror if the object distance is 30 cm and the image distance is -15 cm?

What type of image is formed by a concave mirror when the object is placed between the focal point and the mirror?

When planning an experiment, how would you appropriately measure the image distance (v) for a concave mirror?

Which statement about spherical mirrors is true regarding their magnification?

If an image formed by a concave mirror is real and inverted, what can be said about the object distance?

What is the relationship between the focal length (f), object distance (u), and image distance (v) in a spherical mirror?

How does increasing the object distance (u) affect the image characteristics in a concave mirror?

What occurs to the image produced by a concave mirror when the object is moved to infinity?

A convex mirror always produces which type of image?

Which scenario describes how a concave mirror would behave as a projector?

When observing an object close to a concave mirror, the image seen appears to be:

Which of the following characteristics is NOT true for images formed by concave mirrors?

If an object is placed at the center of curvature of a concave mirror, what will be the characteristics of the image produced?

A scientific experiment involves measuring the focal length of a concave mirror. Which method is most commonly used?