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  • Given below are two statements one is labelled as Asseration A and other labelled as Reason R. Asseration A: For a simple microscope, the angular size of the object equals the angular size of the image. Reason R: Magnification is achieved as the small

Given below are two statements one is labelled as Asseration A and other labelled as Reason R. Asseration A: For a simple microscope, the angular size of the object equals the angular size of the image. Reason R: Magnification is achieved as the small object kept much closer to the eye than 25cm and hence it subtends a large angle. In the light of the above statements , choose the correct answer from the options given below:
Option: 1 A is true but R is false
Option: 2 A is false but R is true
Option: 3 Both A and R are true but R is correct explantaion of A 
Option: 4 Both A and R are true but R is NOT correct explantaion of A 

Answers (1)

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\begin{aligned} &\theta^{\prime}=\frac{\mathrm{h}}{\mathrm{u}_{0}} ; \theta^{\prime} \text { is same for both object and image }\\ \\ &\mathrm{m}=\frac{\theta^{\prime}}{\theta}=\frac{\mathrm{D}}{\mu_{0}}\\ &\mathrm{u}_{0}<\mathrm{D}\\\\ &\text { Hence } \mathrm{m}>1 \end{aligned}

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Deependra Verma

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