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Assertion The formula connecting u, v an...

Assertion The formula connecting u, v and f for a spherical mirror is valid only for mirrors sizes which are very small compared to their radii of curvature.
Reason Laws of reflection are stricity valid for plane surface, but not for large spherical.

A

Both A and R are correct and R is the correct explanation of A

B

Both A and R are correct and R is the correct explanation of A

C

A is correct but R is not correct

D

A is not correct but R is correct

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The correct Answer is:
C
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In each of the questions, assertion(A) is given by corresponding statement of reason (R) of the statemens. Mark the correct answer. Q. Statement I: The formula connecting u,v and f for a spherical mirror is valid only for mirrors whose sizes are very small compared to their radii of curvature. Statement II: Laws of reflection are strictly valid for plane surfaces, but not for large spherical surfaces.

The formula connecting u,v and f for a spherical mirror is valid only for mirrors whose sizes are very small compared to their radii of curvature. Because Statement-2 Laws of reflection are strictly valid for plane surfaces, but nor for large spherical surfaces.s

Statement - 1 : The formula connecting u, v and f for a spherical mirror is valid only for mirrors whose sizes are very small compared to their radii of curvature. Because Statement - 2 : Laws of reflection are strictly valid for plane surfaces, but not for large spherical surfaces.

Assertion:- The formula ((1)/(4)+(1)/(u)=(1)/(f)) connecting u and v for a spherical mirror is valid only for mirros whose sizes are very small compared to their radii of curvatures. Reason:- Laws of reflection are strictly valid for smaller size of of optical system.

Assertion : Focal length of a spherical mirror does not depend on the material from which mirror is made but same for the lens depends on the material of lens. Reason : Law of reflection does not depend on material and surrounding medium but law of refraction depends on refractive index of the materials.

MOTION-RAY OPTICS-Exercise-3
  1. A fish looking up through the water sees the outside world contained i...

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  2. Two thin lenses of focal length f(1) and f(2) are in contact and coaxi...

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  3. Assertion The formula connecting u, v and f for a spherical mirror is ...

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  4. A ray of light travelling in transparent medium of refractive indexmuf...

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  5. A lens haivng focal length and aperture of diameter d forms an image o...

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  6. The speed of light in media M1 and M2 are 1.5 xx 10^8 m//s and 2.0 xx ...

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  7. A ray of light is incident on a 60^(@) prism at the minimum deviation ...

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  8. Which of the following is not due to total internal reflection ?

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  9. A biconvex lens has a radius of curvature of magnitude 20cm. Which one...

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  10. A thin prism of angle 15^(@) made of glass of refractive index mu(1)=1...

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  11. A biconvex lens has a radius of curvature of magnitude 20cm. Which one...

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  12. A rod of length 30 cm lies along the principal axis of a concave mirro...

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  13. A thin convex lens of refractive index 1.5cm has 20cm focal length in ...

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  14. A thin convex lens of refractive index 1.5cm has 20cm focal length in ...

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  15. In a convex lens of focal length F, the minimum distance between an ob...

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  16. The graph between the image distance (v ) and object distance (u) from...

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  17. A hollow prism is filled with water and placed in air. It will deviate...

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  18. The angle of a prism is A . One of its refracting surfaces is silvered...

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  19. If the focal length of the objective lens is increased then

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  20. The refracting angle of a prism is A, and refractive index of the mate...

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