class 10 physics chapter 1 light-reflection and refraction

which is not part of the mirror

• pole

• centre of curvature

• principal axis

which mirror is used in heating the solar furnaces

In the new Cartesian Sign Convention which part of the mirror is taken as origin?

• centre of curvature

• pole

• radius

• principal axis

For a real object,which of the following can produce a real image?

• plane mirror

• convex mirror

• concave mirror

• convex lens

The angle of incidence i and refraction r are equal in transparent slab when the value of i is

• o degrees

• 45 degrees

• 75 degrees

• 90 degrees

Light from the Sun falling on a convex lens will converge at a point called

• pole

• axis

• centre of curvature

• focus

When object moves closer to convex lens, the image formed by it shift

• away from the lens

• stay at the same place

• first towards and then away from the lens

• towards the lens

As light travels from a rarer to a denser medium , the speed of light in the medium

• increases

• remains the same

• decreases

• first increases and then decreases

The laws of reflection hold good for

• only plane mirror

• only concave mirror

• all mirrors irrespective of their shape

• only convex mirror

Image formed by reflection from a plane mirror is

• real and erect

• real and inverted

• virtual and inverted

• virtual and erect