એક અંતર્ગોળ અરીસાની કેન્દ્રલંબાઈ 15 cm છે આ અરીસાની સામે વસ્તુને 10 cm અંતરે મૂકતાં રચાતું પ્રતિબિંબ ___________ હશે.

A આભાસી, ચત્તું અને મોટું
B વાસ્તવિક, ઊલટું અને નાનું
C આભાસી, ચત્તું અને નાનું
D વાસ્તવિક, ઊલટું અને મોટું

Verified Solution

Answer & Solution

Correct Answer

(A) આભાસી, ચત્તું અને મોટું

Step-by-step Solution

Detailed explanation

\( \frac{1}{v} = \frac{1}{f} - \frac{1}{u} = \frac{1}{-15 \text{ cm}} - \frac{1}{-10 \text{ cm}} = \frac{-2+3}{30 \text{ cm}} = \frac{1}{30 \text{ cm}} \) \( v = 30 \text{ cm} \)

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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