Science Practice Quiz 82

Q1.If a pencil is partly immersed in different liquids like water, kerosene, or turpentine, how would the extent of its apparent displacement compare?

A. It would be the same for all liquids. B. It would be different for different liquids. C. It depends only on the material of the pencil. D. It depends only on the type of glass tumbler.

Q2.If a glass slab placed over printed matter is replaced with a transparent plastic slab, how would the apparent height to which the letters rise compare?

A. The letters would appear to rise to the same height. B. The letters would appear to rise to a different height. C. The letters would not appear to rise at all. D. The letters would appear inverted.

Q3.What phenomenon describes the change in the direction of propagation of light when it travels obliquely from one medium to another?

A. Reflection B. Dispersion C. Refraction D. Diffraction

Q4.According to Activity 9.8, why does a coin placed at the bottom of a bowl filled with water appear slightly raised above its actual position?

A. Due to reflection of light B. Due to dispersion of light C. Due to refraction of light D. Due to diffraction of light

Q5.When a glass slab is placed over a straight line drawn on paper such that one of its edges makes an angle with the line, what observation is made about the portion of the line under the slab from the sides?

A. It appears thicker B. It appears to be bent at the edges C. It appears to be broken into two parts D. It appears shorter

Q6.If a glass slab is placed normal to a straight line drawn on paper, what observation is made about the part of the line under the glass slab?

A. It appears bent B. It appears thicker C. It does not appear bent D. It appears raised

Q7.When looking from the top of a glass slab placed over a line, what happens to the part of the line beneath the slab?

A. It appears to be lowered B. It appears to be raised C. It appears to be wider D. It appears to be narrower

Q8.Based on Activity 9.7, why might one not succeed in picking up a coin from the bottom of a water-filled bucket in one go?

A. The coin is too slippery B. The water makes the coin appear in a different position C. The bucket is too deep to reach D. The coin is too small to grasp

Q9.What is the primary purpose of activities like placing a coin in water or observing a line through a glass slab?

A. To demonstrate the properties of water B. To understand the phenomenon of refraction of light C. To test visual perception D. To study the density of different media

Q10.When a light ray enters from a rarer medium to a denser medium, such as from air to glass, how does it bend relative to the normal?

A. It bends away from the normal. B. It bends towards the normal. C. It passes undeviated. D. It reflects back into the rarer medium.

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Science Practice Quiz 82