Chapter 15- Light

Which of the following is the best example of an object absorbing light?

• A curved mirror in the sun.

• A clean window in the sun.

• A black sweater in the sun.

• A long shadow in the sun.

State two properties required to reflect light. (Write in small letters and put an 'and' between the two answers)

State the full form of the acronym 'LOST'. (Write the answer in small letters and put a 'comma' between the 4 answers)

Pick out the properties of image formed by concave mirror.

• Real

• Magnified

• Inverted

• Virtual

• Erect

_________property tells the direction of travelling light.

The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 3 m/s. The driver sees in his rear mew mirror the image of a truck parked behind his car. The speed at which the image of the truck appears to approach the driver will be

• 2 m/s

• 3 m/s

• 4 m/s

• 6 m/s

We cannot obtain a real, enlarged and inverted image by a concave lens.

• True

• False

Name the disc based on the principle of dispersion of light. (Write answers in small letters)

Name the following:

When an object in the right appears to be the left in a mirror and vice versa. (Write in small letters)

When a beam of white light passes through a glass prism is called______.

(Write answer in small letters)