Advertisements
Advertisements
प्रश्न
A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is ______.
पर्याय
- 30 cm
- 20 cm
- 40 cm
- 60 cm
MCQ
रिकाम्या जागा भरा
उत्तर
A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is - 20 cm.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
