cisce.org : ICSE/ ISC Physics Question Paper Council For Indian School Certificate Examinations
Orgnisation : Council For The Indian School Certificate Examinations
Exam :ICSE/ ISC Physics
Document type : Question Paper
Website : cisce.org
Download Sample/Model Question Papers:
ISC : https://www.pdfquestion.in/uploads/cisce.org/5886-PhysicsPaper-1.pdf
ICSE :https://www.pdfquestion.in/uploads/cisce.org/5886-Physics%20(Science%20Paper%20-%201).pdf
Physics Question Paper :
Answers to this Paper must be written on the paper provided separately.
SECTION I (40 Marks)
Attempt all questions from this Section.
Related : Council For Indian School Certificate Examinations ICSE English-I & II Question Paper : www.pdfquestion.in/5879.html
Question 1 :
(a) Derive the relation between C G S and S I unit of force. [2]
(b) Classify the following into contact and non contact forces :
1. Tension 2. Friction 3. Gravitational force 4. Magnetic force. [2]
(c) Classify the following into levers as class I, class II or class III :
1. A door 2. Catapult 3. Wheelbarrow 4. Fishing rod. [2]
(d) Where is the centre of gravity of the following objects situated?
l. Ring 2. Rhombus 3. Scalene triangle 4. Cylinder. [2]
(e) Calculate the resultant torque from the following diagram [2]
Question 2 :
(a) A uniform metre scale is in equilibrium position. Calculate the mass of the ruler. [2]
(b) When a ray of light passes from air to glass, for what angle of incidence, the ray will not be deviated. [2]
(c) Name the lens that always forms a virtual and erect image. [2]
(d) A coin at the bottom of a trough containing water to a depth of 15 cm appears to be 3.75 cm raised above from the bottom. Calculate the refractive index of water. [2]
(e) Draw a ray diagram to illustrate how a ray of light incident obliquely on one face of a rectangular glass slab of uniform thickness emerges. [2]
Question 3 :
(a) What are the factors on which the following characteristics of a musical note depends? 1. intensity 2. timbre. [2]
(b) How does a trawler man catch fish in deep water? [2]
(c) What are the factors on which resistance of a conductor depends? [2]
(d) Name the material used for:
(i) Electric fuse.
(ii) Connecting wire.
(iii) Filament of an electric bulb.
(iv) Heating element of an electric toaster. [2]
(e) Give the harmful effects of global warming on lakes and oceans found frozen during winter. [2]
Question 4 :
(a) Calculate the wavelength of an electromagnetic wave of frequency 15 MHz. [2]
(b) State the function of a transformer. [2]
(c) State two uses of a cathode ray tube. [2]
(d) Show by equations, the effect on the proton number Z and mass number A of the parent nucleus brought about by the two types of radioactive decay. [2]
(e) State one industrial use of , , and radiation. [2]
Section II : (40 Marks)
Attempt any four questions from this Section
Question 5 :
(a) An engine can pump 30,000 litres of water to a vertical height of 45 metres in 10 minutes. Calculate the work done by the machine and the power. (Density of water = 103 kg/m3, 1000 litre = 1 m3, g= 9.8 m s-2). [3]
(b) ‘Renewable sources of energy must be encouraged to meet growing demands of energy’. Give suggestions to support your answer. [3]
(c) A pulley system has a velocity ratio 5. Draw a neat labelled diagram of the pulley system to lift a load by applying the effort in a convenient direction. Mark the tension in your diagram.
(i) If the efficiency of the system is 80% find its mechanical advantage.
(ii) If a load of 10 kgf is pulled up by a distance of 2 m in 10 s, calculate the power developed by the effort (given g = 10 m s-2). [4]
Question 6 :
(a) (i) Copy and complete the ray diagram to show the formation of the image of the object AB
(ii) Name the lens LL’.
(iii) Name a device in which this principle is used. [3]
(b) Copy and complete the following diagrams to show the path of the ray of monochromatic light in each case as it enters and emerges out of the prism. Mark the angle wherever necessary (critical angle is 42°) . [3]
(c) (i) Name any four regions of electromagnetic spectrum in increasing order of frequency.
(ii) Calculate the refractive index of a liquid with respect to air applying Snell’s law (use geometric construction). [4]