Physics
Grade-10
Easy
Question
The point where a ray of parallel beam of light converges to after refraction through a convex lens is called ____.
- Center of curvature
- Focus
- Optical center
- Pole
Hint:
The point where the ray from a parallel beam of light converges in the principal axis represents the focus or principal focus.
The correct answer is: Focus
The point where the ray from a parallel beam meets in the principal axis is called the focus.
- A ray from a parallel beam after refraction falls at a point on the principal axis.
- The point at which the refracted rays meets is called the principal focus.
- The biconcave and biconvex lenses have two principal focuses as the rays can be passed from both sides.
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