Uses and importance of concave mirrors Practice exercise1

Course: Grade 9 Integrated Science - Force and Energy - Curved Mirrors

Quiz Questions (23 questions)

Question 1
A family in Garissa is using a solar cooker with a curved reflective surface to cook ugali. Explain how the concave mirror helps cook the food.  (1 mark)
Question 2
A family in Garissa is using a solar cooker with a curved reflective surface to cook ugali. Explain how the concave mirror helps cook the food.  (1 mark)
Question 3
Mercy wants to buy a mirror that helps her apply makeup precisely. She finds one labelled as a “concave mirror.” Explain why this type of mirror is suitable for her task.  (1 mark)
Question 4
Mercy wants to buy a mirror that helps her apply makeup precisely. She finds one labelled as a “concave mirror.” Explain why this type of mirror is suitable for her task.  (1 mark)
Question 5
An astronomy club at a secondary school in Kisumu is building a small reflecting telescope using a curved mirror. What is the role of the concave mirror in this setup?  (1 mark)
Question 6
An astronomy club at a secondary school in Kisumu is building a small reflecting telescope using a curved mirror. What is the role of the concave mirror in this setup?  (1 mark)
Question 7
Look at the image below of a car at night. Explain how concave mirrors help the driver see better in this situation.  (1 mark)
Question 8
Look at the image below of a car at night. Explain how concave mirrors help the driver see better in this situation.  (1 mark)
Question 9
Look at the image below of a car at night. Explain how concave mirrors help the driver see better in this situation.  (1 mark)
Question 10
Study the image of a dentist using a mirror during a dental check-up.Why is a concave mirror useful in this situation?  (1 mark)
Question 11
Study the image of a dentist using a mirror during a dental check-up.Why is a concave mirror useful in this situation?  (1 mark)
Question 12
Study the image of a dentist using a mirror during a dental check-up. Why is a concave mirror useful in this situation?  (1 mark)
Question 13
A group of learners from Machakos builds a homemade telescope. They plan to use a curved mirror at the base. Explain why a concave mirror is important in this design and what would happen if they used a convex or flat mirror instead.  (2 marks)
Question 14
A group of learners from Machakos builds a homemade telescope. They plan to use a curved mirror at the base. Explain why a concave mirror is important in this design and what would happen if they used a convex or flat mirror instead.  (2 marks)
Question 15
During a career talk, a dentist explains how mirrors help examine patients’ teeth. A student asks why a dentist does not just use a flat mirror. Justify the use of a concave mirror in dental examinations.  (2 marks)
Question 16
During a career talk, a dentist explains how mirrors help examine patients’ teeth. A student asks why a dentist does not just use a flat mirror. Justify the use of a concave mirror in dental examinations.  (2 marks)
Question 17
A student notices that the headlights of her father's car produce a bright, focused beam at night. She wonders why a curved mirror is used inside the headlight. Explain how a concave mirror helps in this situation and why it is better than a flat mirror.  (2 marks)
Question 18
A student notices that the headlights of her father's car produce a bright, focused beam at night. She wonders why a curved mirror is used inside the headlight. Explain how a concave mirror helps in this situation and why it is better than a flat mirror.  (2 marks)
Question 19
Look at the image below showing a solar cooker in use. Explain how the concave mirror helps in this setup and why it is a useful tool in places like Turkana or Garissa.  (2 marks)
Question 20
Look at the image below showing a solar cooker in use. Explain how the concave mirror helps in this setup and why it is a useful tool in places like Turkana or Garissa.  (2 marks)
Question 21
Look at the image below showing a solar cooker in use. Explain how the concave mirror helps in this setup and why it is a useful tool in places like Turkana or Garissa.  (2 marks)
Question 22
A mirror manufacturer in Nairobi is designing a new line of grooming mirrors. He is unsure whether to use a concave or convex mirror. Advise him on which type is better for tasks like shaving or applying makeup, and explain why.  (2 marks)
Question 23
A mirror manufacturer in Nairobi is designing a new line of grooming mirrors. He is unsure whether to use a concave or convex mirror. Advise him on which type is better for tasks like shaving or applying makeup, and explain why.  (2 marks)

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