10Class Physics Reflection Day 1

The scientist who burned ships using mirrors is ____

• Archimedes
• Pierre de fermat
• Newton
• Boyle

The geometrical center of curved mirror is called_____

• Pole
• Center of curvature
• Radius of curveture
• Focus

The line which pass through the center of curveture and pole is ____

• Principal axis
• Reflected ray
• Incidence ray
• Axis

The distance between pole and centre of curveture is_____

• Radius of curvature
• Focal length
• Objest distance
• Image distance

The distance between focus and pole of a mirror is called _____

• Focal length
• Height of the mirror
• Objest distance
• Radius of curveture

The angle between incidence ray and normal ray is called as _____

• angle of incidence
• angle of reflection
• angle of ray
• angle of normal

The angle between normal and reflected ray is called

• angle of reflection
• angle of normal
• angle of ray
• angle of incidence

The scientist who used Convex mirrors to burn ships is

• No Answer
• Archimedes
• Pascal
• Newton

R=2f is valid for

• both convex and concave mirrors
• convex lenses
• concave lenses
• plane mirrors

The ratio of focal length of a spherical mirror to its radius of curvature is

• 0.5
• 1
• 2
• 3