Science Practice Quiz 74

Q1.For a concave mirror, where does its centre of curvature lie?

A. Behind the mirror B. In front of the mirror C. At the pole of the mirror D. On the reflecting surface

Q2.In the case of a convex mirror, where is its centre of curvature located?

A. In front of the mirror B. At the pole of the mirror C. Behind the mirror D. On the reflecting surface

Q3.What is the term for the radius of the sphere of which the reflecting surface of a spherical mirror forms a part?

A. Focal length B. Principal axis C. Radius of curvature D. Aperture

Q4.What is the name given to the straight line passing through the pole and the centre of curvature of a spherical mirror?

A. Focal plane B. Principal axis C. Normal line D. Optical axis

Q5.How is the principal axis oriented with respect to the mirror at its pole?

A. It is tangential to the mirror. B. It is parallel to the mirror. C. It is normal to the mirror. D. It intersects the mirror at an acute angle.

Q6.According to the provided text, what is a potential danger of looking directly at the Sun or into a mirror reflecting sunlight?

A. It may cause skin burns. B. It may damage your eyes. C. It may cause temporary blindness. D. It may lead to headaches.

Q7.When a concave mirror is directed towards the Sun and its reflected light is focused onto a sheet of paper, what is observed after some time?

A. The paper becomes wet. B. The paper changes color. C. The paper begins to burn, producing smoke and eventually catching fire. D. The paper reflects the light back.

Q8.Why does the paper burn when a concave mirror focuses sunlight onto it?

A. The mirror reflects harmful UV rays. B. The mirror creates a vacuum that ignites the paper. C. The light from the Sun is converged at a point, producing concentrated heat. D. The paper reacts chemically with the mirror's surface.

Q9.For a concave mirror, what is the point on the principal axis called where rays parallel to the principal axis meet/intersect after reflection?

A. Centre of curvature B. Pole C. Principal focus D. Optical centre

Q10.For a convex mirror, what is the point on the principal axis called from which reflected rays, initially parallel to the principal axis, appear to come?

A. Centre of curvature B. Pole C. Principal focus D. Vertex

Sign in with Email

Science Practice Quiz 74