Question

Assertion : If a spherical mirror is shipped in water, its focal length remains unchanged. Reason : A laser light is focused by a converging lens. There will be a significant chromatic aberration.​

Answer 1

Answer:

According to pattern option 3 (correct assertion but reason is wrong)

Assertion is true, as focal length of spherical mirror doesn't depend on external medium. But reason is wrong as there will be no significant aberration as there are many wavelengths in laser light.

hope this will help you

Answer 2

If a spherical mirror is shipped in water, its focal length remains unchanged.

In this the assertion is true but the reason is false.

• Because the spherical mirrors (both convex and concave) are filled with water, the central length of the mirrors doesn't really alter. This is due to fact that the focal length of mirrors is individualistic of the extracellular environment in that they are held.
• Refraction occurs in cases of lenses. The indication of refraction of the lens decreases when it is covered in water. As a result, the central length of a lens expands.
• Only when light travels across two materials with different refractive indexes does its direction change. When the refractive indication of the medium is constant, light propagates in a fixed direction. As a result, whether in air or water, the light will move in a straight path.