Year 11 general questions.

Which of the following observations is not a consequence of the principle of the rectilinear propagation of light?

• Diffraction patterns

• Shadows

• Eclipse

• Images in a pinhole camera

Virtual image is one

• Formed by the intersection of actual rays.

• Which is not visible to the eyes.

• Through which rays of light do not pass.

• Which can be formed on a screen.

An opaque object can be seen because of the amount of light it

• Emits from its surface.

• Disperses to the observer.

• Reflects to the observer .

• Transmit through it.

When the moon comes between the sun and the earth such that they are collinear, there is

• Eclipse of the moon

• Eclipse of the sun

• Eclipse of the earth

• Total darkness on the earth surface

An object 3.00m high is placed at a distance of 7.5m from a pinhole camera. If the image height is 6.00cm, what is the distance of the film from the pinhole?

• 3.75cm

• 7.50cm

• 15.00cm

• 30.00cm

A body that produces its own light is said to be

• Luminous

• Opaque

• Translucent

• Transparent

Which of the following is not self luminous?

• Incandescent bulbs.

• Lighted candle .

• The moon .

• The sun.

The image of any real object formed by a diverging mirror is not

• Inverted

• Erect

• Diminished

• Virtual

A concave mirror used as a shaving mirror should

• Have a virtual focal length.

• Be narrow.

• Have small curvature.

• Have a long focal length.

The image of an object placed at the centre of curvature of a converging mirror is

• At the centre of curvature.

• At the principal focus.

• Inverted and virtual.

• Magnified and real.