A camera of 6 centimeter focal length is used to photograph a distant scene. the distance from the lens to the image is approximately?
Everyday Science / Branch of Science — Multiple-choice practice
چھ سینٹی میٹر فوکل لینتھ کا کیمرہ دور دراز کے منظر کی تصویر کشی کے لیے استعمال کیا جاتا ہے۔ لینس سے تصویر کا فاصلہ تقریباً ہے؟
- A. 1m
- B. 6 cm
- C. 4 m
- D. 80 cm
- E. 4 cm
Correct answer
6 cm
Explanation
Explanation To find the approximate distance from the lens to the image in a camera with a focal length of 6 centimeters, we can use the lens formula: 1/focal length = 1/object distance + 1/image distance Given information: - Focal length = 6 centimeters In this case, the distant scene is being photographed, so we can assume that the object's distance is very large, approaching infinity. As a result, we can approximate the lens formula as: 1/focal length ≈ 1/image distance Simplifying the equation: 1/6 cm ≈ 1/image distance Cross-multiplying: image distance ≈ 6 cm Therefore, the distance from the lens to the image is approximately 6 centimeters.
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