In an ecosystem, the development of pioneer species is immediately followed by the development of _______________

In an ecosystem, plants are categorized as

1. Producers
2. Primary consumers
3. Herbivores
4. Decomposers

_________________ ecosystem has maximum amount of biomass.

1. Lake
2. Dessert
3. Pond
4. Forest

According to the laws of reflection of light, which of these does not lie on the same plane as the rest?

1. The incident ray
2. The reflected ray
3. The normal Convex lens
4. Reflecting surface

A convex mirror has its concave surface as _____.

1. Reflecting surface
2. Non-reflecting surface
3. Both 1 and 2 Convex lens
4. None of the above

The picture below shows the diagrammatic representation of a ______.

1. Convex mirror
2. Concave mirror
3. Convex lens Convex lens
4. Concave lens

The incident ray, the reflected ray and the normal touch each other at ____.

1. The reflecting surface
2. The point of incidence
3. The same plane The same plane
4. All of the above

The angle made by the incident ray with the normal is 63 degrees. The angle of reflection is ____ degrees.

A reflected ray makes an angle of 34 degrees with the reflecting surface. The angle of incidence is ____ degrees.

An incident ray makes an angle of 45 degrees with the reflecting surface. The angle of incidence is ____ degrees.

An incident ray goes perpendicular to the normal. Its angle of incidence is ___ degrees.

The reflecting surfaces of a convex mirror and a concave mirror are ____ and ____, respectively.

1. Curved in, bulged out
2. Bulged out, curved in
3. Curved in, curved in Curved in, curved in
4. Bulged out, bulged out

The laws of reflection do not hold for the reflection from the ____.

1. Plane mirror
2. Concave mirror
3. Convex mirror Convex mirror
4. None of the above

The incident ray, the reflected ray, the normal at the point of incidence all lie on the same plane, which is ____.

1. Parallel to the reflecting surface
2. Same as the reflecting surface
3. Perpendicular to the reflecting surface Perpendicular to the reflecting surface
4. All of the above

The angle between the normal and the reflecting surface is ____ degrees.