12 Light 2020J

Which diagram shows how the light from a candle is reflected by a mirror, and shows the position of the image formed?

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The diagram shows an image being formed by a converging lens. Which description of the image formed is correct?

• enlarged and inverted

• enlarged and upright

• diminished and inverted

• diminished and upright

A converging lens can be used as a magnifying glass.

What will be the nature of the image?

• real, inverted, diminished

• real, upright, enlarged

• virtual, inverted, enlarged

• virtual, upright, enlarged

The diagram shows a beam of light travelling through glass and meeting a glass-air interface.

Which row correctly describes angle of incidence and observation at the glass-air interface?

• 30° , some internal reflection

• 30° , total internal reflection

• 60° , some internal reflection

• 60° , total internal reflection

A narrow beam of white light passes through a prism and is dispersed into a spectrum. Which row is correct in describing colour of beam 1, 2, and 3?

• blue, yellow, red

• red, blue, yellow

• red, yellow, blue

• yellow, blue, red

The diagram shows a ray of light incident on the surface of a glass block.

The ray of light is partially reflected back into the air and partially refracted into the glass block.

Which row correctly identifies the angle of reflection and the angle of refraction?

• angle of reflection: 1, angle of refraction: 3

• angle of reflection: 1, angle of refraction: 4

• angle of reflection: 2, angle of refraction: 3

• angle of reflection: 2, angle of refraction: 4

A beam of light consists of yellow and blue light. The beam of light is incident on a glass prism. Which diagram is correct? .......

The diagram shows a ray of light incident on a plane mirror.

The angle between the ray and the mirror is 35°.

The ray is reflected by the mirror.

What is the angle of reflection?

• 35°

• 55°

• 70°

• 110°

A beam of white light is split into a spectrum of seven colours.

Which name is given to this process?

• diffraction

• dispersion

• reflection

• refraction

An object O is placed in front of a plane mirror as shown.

Which row is correct?

• Position of the image: 1, Nature of the image: real

• Position of the image: 1, Nature of the image: virtual

• Position of the image: 2, Nature of the image: real

• Position of the image: 2, Nature of the image: virtual