CSEE Physics Paper 1 2014 — Past Paper & Online Quiz

8. 1 mark

A solid metal cube has each side doubled to make a solid cube of the same metal eight times bigger in volume. The ration of resistivity of the new cube to resistivity of the old cube is

A. 8:1

B. 6:1

C. 1:1

D. 1:6

E. 1:8

9. 1 mark

In a cloud chamber, straight-line trails of vapour are produced by a source emitting

A. beta-particles

B. gamma-rays

C. electrons

D. alpha-particles

E. light rays

2. 10 marks

Match the times in List A with reponses in List B by writing the letter of the correct response beside the item number in the answer booklet provided. List A (i) Mass of water vapour which is actually present in a unit volume of air at constant temperature (ii) Rate at which a material transfers heat energy (iii) Measurement of the amount of moisture present in the atmosphere. (iv) Mass of water vapour present in a unit volume of air. (v) Difference between readings of the two thermometers. (vi) A measure of the extent to which the atmosphere contains water vapour. (vii) It can be found by the method of mixture or electrical heating. (viii) Amount of heat energy required to change the state of a substance. (ix) Measures temperature of inaccessible structures. (x) Depends on the electrical properties of materials varying with temperature.

(i) Mass of water vapour which is actually present in a unit volume of air at constant temperature 1 mk

(ii) Rate at which a material transfers heat energy 1 mk

(iii) Measurement of the amount of moisture present in the atmosphere. 1 mk

(iv) Mass of water vapour present in a unit volume of air. 1 mk

(v) Difference between readings of the two thermometers. 1 mk

(vi) A measure of the extent to which the atmosphere contains water vapour. 1 mk

(vii) It can be found by the method of mixture or electrical heating. 1 mk

((viii) Amount of heat energy required to change the state of a substance. 1 mk

(ix) Measures temperature of inaccessible structures. 1 mk

(x) Depends on the electrical properties of materials varying with temperature. 1 mk

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3. 10 marks

For each of the items (i)-(x), fill in the blank spaces by writing the correct answer in the answer booklet provided. (i) The presence of electric charge in a body can be detected by means of . (ii) The automatic flushing tank uses the working principle of . (iii) The simple a.c. generator works on the converse principle of . (iv) The element that is heaviest of all natural elements is called . (v) The defects of an image formed by a single lens is called . (vi) Most stars in the universe which are visible in the night sky are within our own . (vii) A part of the Earth’s mantle and crust containing liquids, crystals and dissolved gases is known as . (viii) A p-type semiconductor is formed when silicon is replaced by . (ix) The electric current can pass through an electric component due to the existence of . (x) The physical state of a substance normally depends on .

(i) The presence of electric charge in a body can be detected by means of . 1 mk

(ii) The automatic flushing tank uses the working principle of . 1 mk

(iii) The simple a.c. generator works on the converse principle of . 1 mk

(iv) The element that is heaviest of all natural elements is called . 1 mk

(v) The defects of an image formed by a single lens is called . 1 mk

(vi) Most stars in the universe which are visible in the night sky are within our own . 1 mk

(vii) A part of the Earth’s mantle and crust containing liquids, crystals and dissolved gases is known as . 1 mk

((viii) A p-type semiconductor is formed when silicon is replaced by . 1 mk

(ix) The electric current can pass through an electric component due to the existence of . 1 mk

(x) The physical state of a substance normally depends on . 1 mk

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4. 20 marks

Answer all questions in this section.

(a) Give two practical examples where impulse and momentum play an important role. 4 mk

(b) A box of mass 50 kg is raised vertically with a uniform acceleration ‘a’ when a force of 700 N is acting in a rope. Calculate the uniform acceleration ‘a’. 6 mk

(c) Sand falls gently at a constant rate of 50 g/s onto a horizontal belt moving steadily at 40 cm/s. Find the force in newtons exerted by the sand on the belt. State any assumptions made in your calculation. 4 mk

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5. 20 marks

Answer all questions in this section.

(a) What is meant by the following terms? (i) Resonance (ii) Overtones. 4 mk

(b) Briefly give reasons for the following: (i) the fundamental frequency may alter during the day. (ii) notes of the same pitch played on a violin and a flute sound different. 6 mk

(c) The frequency obtained from a plucked string is 400 Hz when the tension is 2 N. Calculate: (i) the frequency when the tension is increased to 8 N. (ii) the tension needed to produce a note of frequency of 600 Hz. 10 mk

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6. 20 marks

Answer all questions in this section.

(a) State the parallelogram law of forces. 2 mk

(b) Wind is blowing 30° west of north at 20 km/hour. A bird is flying in the wind and its velocity relative to the ground is 90 km/hour at 75° west of north. Calculate the velocity and direction of the bird. 8 mk

(c) A body of mass 40 kg is placed in a straight track sloping at an angle of 45° to the horizontal. If the body is held from slipping by friction, calculate the normal reaction and the force of friction. 4 mk

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7. 10 marks

Answer all questions in this section.

(a) Mention three points to be considered when drawing a ray diagram to show the formation of images on a concave mirror. 6 mk

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10. 10 marks

Figure 2 shows a section of a cathode-ray oscilloscope. Figure 2 What changes should be done in order to produce the following on the screen:

((a)(i) Give one peculiar property of a diode as a rectifier. 1 mk

((b)(i) Briefly explain the function of each of the following apparatus: Diffusion cloud chamber. 1 mk

((c)(i) What changes should be done in order to produce the following on the screen: a horizontal line. 1 mk

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11. 10 marks

((a)(i) Mention two experiments which can be done in the laboratory to verify thermal expansion of solids. 1 mk

((b)(i) Explain how each of the following works: a bimetallic thermometer. 1 mk

((c)(i) Describe the structure of an induction coil and briefly explain its mode of action. 1 mk

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Physics · Paper 1 · 2014

Physics · Paper 1 · 2014

Section A

Section B

Section C

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