SATHEE: Optics Question 906

Optics Question 906

Question: The focal length of a concave mirror is f and the distance from the object to the principle focus is x. The ratio of the size of the image to the size of the object is

[Kerala PET 2005]

Options:

A) $\frac{f + x}{f}$

B) $\frac{f}{x}$

C) $\sqrt{\frac{f}{x}}$

D) $\frac{f^{2}}{x^{2}}$

Show Answer

Answer:

Correct Answer: B

Solution:

$= 0.3 - 0.1$ where u = f + x

$∴ \frac{I}{O} = - \frac{f}{x}$

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Optics Question 906

Question: The focal length of a concave mirror is f and the distance from the object to the principle focus is x. The ratio of the size of the image to the size of the object is

Options:

Answer:

Solution:

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