KSSM Chapter 8 Form 1

Which type of mirror does a dentist use to see patient's teeth?

• Plane mirror

• Concave mirror

• Convex mirror

Richard saw a rob attempt in a shop through a mirror installed by the shop's owner. What type of mirror did the shop owner install?

• Plane mirror

• Concave mirror

• Convex mirror

Choose the law of light implied in this situation

• Reflection

• Refraction

• Adding

• Scattering

Choose the false statement on properties of light

• Light travels faster than sound

• Lightning is seen before thunder is heard

• Light can be dispersed by water droplets

• Light travels in flexible lines

Ain found that her shadow is the shortest in the afternoon. Choose the best inference for the situation.

• Sunlight is most intense in the afternoon

• Sunlight travels in straight lines

• Sun is closest to her head in the afternoon

• Ain is the opaque object hence her shadow is formed

By referring to the diagram, which best describes reflection?

• i = r

• i > r

• i < r

• i can be replaced by r

Based on the diagram, which is statement is correct?

• P and Q are media with different densities

• P and Q shares equal densities

• Q is denser than P

• P is denser than Q

Which of these is wrong?

• Incident ray, reflected ray and normal line all lie on the same plane

• Incident ray and reflected ray lie on the same plane

• On the same plane, angle of incidence and angle of reflection are equal to each other

• Reflection may not occur on curved plane

Why does the bottom of a deep swimming pool appear shallower?

• Less light is available in the swimming pool

• The image seen is where eyes reach it's sight limit

• Reflected ray becomes closer to the normal line

• Refracted ray becomes closer to the normal line

Which is true about dispersion of light?

• White light consists of primary colour as it's component

• Each component of colour travels at similar speed in a medium

• Red light has the highest speed, so red light is refracted the most

• Violet light has the lowest speed, so violet light is refracted the most