SATHEE: Optics Question 920

Optics Question 920

Question: A virtual image three times the size of the object is obtained with a concave mirror of radius of curvature $36 c m .$ The distance of the object from the mirror is

[MP PET 1986]

Options:

A) $5 c m$

B) $12 c m$

C) $10 c m$

D) $20 c m$

Show Answer

Answer:

Correct Answer: B

Solution:

Image is virtual so m = + 3. and $f = \frac{R}{2} = 18 c m$ .

So from $m = \frac{f}{f - u} \Rightarrow 3 = \frac{(- 18)}{(- 18) - u}$

$\Rightarrow u = - 12 c m .$

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Optics Question 920

Question: A virtual image three times the size of the object is obtained with a concave mirror of radius of curvature $36 c m .$ The distance of the object from the mirror is

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

Optics Question 920

Question: A virtual image three times the size of the object is obtained with a concave mirror of radius of curvature 36cm. The distance of the object from the mirror is

Options:

Answer:

Solution:

इंजीनियरिंग की तैयारी

चिकित्सा तैयारी

एनसीईआरटी पुस्तकें और समाधान

महत्वपूर्ण संसाधन

अन्य संसाधन

पाठ्यक्रम

परीक्षा मंच

नमूना मॉक टेस्ट

सदस्यता

एनसीईआरटी व्यायाम वीडियो समाधान

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Question: A virtual image three times the size of the object is obtained with a concave mirror of radius of curvature $36 c m .$ The distance of the object from the mirror is