CIE Physics Paper-1: Specimen Questions 20 - 21 of 109

Question number: 20

MCQ▾

Question

Find most stable arrangement to hold a flask of liquid.

Choices

Choice (4) Response
a.
A flask holding by stand and clamp

A flask holding by stand and clamp

A student uses a stand and clamp to hold a flask of liquid is shown in figure.

b.
A flask holding by stand and clamp more.

A flask holding by stand and clamp more.

A student uses a stand and clamp to hold a flask of liquid is shown in figure.

c.
A flask holding by stand and clamps

A flask holding by stand and clamps

A student uses a stand and clamp to hold a flask of liquid is shown in figure.

d.
Flask holding by stand and clamp

Flask holding by stand and clamp

A student uses a stand and clamp to hold a flask of liquid is shown in figure.

Answer

b.

Explanation

Most stable arrangement of flask in clamp

Most stable arrangement of flask in clamp

A student uses a stand and clamp to hold a flask of liquid is shown in figure. It is the most stable arrangement.

In all others choices, the flask is keeping at some height. Thus they are not so stable.

Question number: 21

MCQ▾

Question

Find average speed of molecules in 2 boxes if they are filled with air and one is on heater and the other is on bench.

 Two metal boxes put on heater and bench

Two metal boxes put on heater and bench

Two metal boxes Box X and Box Y containing air put on heater and bench respectively.

Choices

Choice (4) Response
a.

Box X – Zero, Box Y – Fast

b.

Box X – Fast, Box Y – Zero

c.

Box X – Slow, Box Y – Fast

d.

Box X – Fast, Box Y – Slow

Answer

d.

Explanation

Here box X is on heater and the box Y is on bench.

Then molecule in box x is moving faster than box Y because of heat. And so molecule in box Y is moving slowly.

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