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एक से अधिक उत्तर प्रकार के प्रश्न

A convex lens of focal length 20 cm is painted black at the middle portion as shown in figure. An object is placed at distance 40 cm from the lens. Then

20 cm फोकस दूरी के एक उत्तल लेन्स के मध्य भाग पर चित्रानुसार काले रंग से पेन्ट किया जाता है। एक वस्तु को लेन्स से 40 cm की दूरी पर रखा जाता है। तब


A
Two images will be formed by the lens

लेन्स द्वारा दो प्रतिबिम्ब निर्मित होंगे
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B
Only one image will be formed by the lens

लेन्स द्वारा केवल एक प्रतिबिम्ब निर्मित होगा
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C
Brightness of image will remain same

प्रतिबिम्ब की दीप्ती समान रहेगी
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D
Brightness of image will decrease

प्रतिबिम्ब की दीप्ती घटेगी
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Solution

The correct option is D Brightness of image will decrease

प्रतिबिम्ब की दीप्ती घटेगी
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