SCERT Kerala Class X Physics Sample Question Paper 2016

Organisation : State Council of Educational Research & Training
Exam : SSLC Examination
Subject : Physics
Document Type : Sample Question Paper
Year : 2016
Class : X STD
Website : http://scert.kerala.gov.in/
Download Sample Question Paper : https://www.pdfquestion.in/uploads/22206-Physics.pdf

Physics Sample Question Paper :

March 2016 :
Standard : X
Time : 1½ Hour

Related : SCERT Kerala Class XII Biology Sample Question Paper 2015 : www.pdfquestion.in/8457.html

Score : 40
Instructions :
1. 15 minutes cool off time. Use this time to read the questions carefully and prepare to write answers.
2. Answer only after reading the instructions and questions carefully.
3. Consider the time and score allotted for each question while answering.

1. Find out the correct relation and fill up the blank
C.N.G : Methane
LPG : ……………………….. (1)
2. LED lamps have become common nowadays ________
(a) On which factor does the colour of L.E.D light depend? (1)
(b) Give any two merits and uses of L.E.D lamps (2)

3. Rewrite incorrect statements if any
(i) The speed of sound decreases when the humidity increases.
(ii) Armature is used as stator in power generators.
(iii) AC generated in all the three armature coils will be of the same phase at the same time.
(iv) Speed of sound through air increases when the temperature increases. (2)

4. Find out the odd one and state the reason – Resonance, Refraction, Reverberation
5. Match those given in column A,B,C suitably
(a) Renewable source of energy Atomic reactor Brown energy
(b) Non renewable source of Wind mills Green energy energy
(c) Fuels Calorific value kilo joule/ kilogram Power Joule /kilogram (3)

6. 3A current flow through an immersion heater working in 230V for 420 seconds.
(a) What effect of electricity is made use of in immersion heater? (1)
(b) Calculate the heat energy produced. (1)
(c) Calculate the rise in temperature of 1 litre of water at 283K by using the heat produced by immersion heater? (Express the rise in kelvin) (Hint: specific heat capacity of water = 4200 J/kg K 1 litre of water = 1 kg of water) (2)

7. New scientific advances are possible in the field of nano technology in the coming years.
(a) What does the word ‘nano’ mean? Why it is possible to bring about great changes to physical properties at nanolevel?
(b) Give any two uses of nanotechnology (2)

8. Power stations are centres where electricity is produced.
(a) Which of the following generators are used in powerstations (1) Single phase AC generator, Three phase AC generator
(b) Write any one peculiarity of this generator. What is the voltage at which electricity is generated at the power station? (1)
(c) Give reason for the use of stepup transformer in the power station. (2)

9. Graphic representation of a wave propagated in 2s is given
(a) What is the wavelength of the wave shown? (1)
(b) Calculate the speed of wave. (1)
Answer 10 A or 10 B only

10. A. 100 g of water and 100 g of coconut oil at 300K are taken in two beakers and heated for 10 minutes in a waterbath
(Specific heat capacity of water = 4200J/kgK
Specific heat capacity of coconut oil = 2100J/kgK)
(a) Which liquid will attain 310 K first? Give reason. (1)
(b) What will be the temperature of coconut oil when the temperature of water becomes 320K? Explain. (2)
OR

10.B. Heat a solid of 1 kg at 0oC. Graph shows the variation of temperature on heating. Answer the questions based on the graph.
(a) What is the melting point of the substance in degree celsius? What will be the melting point in kelvin scale? (2)
(b) Find out the latent heat of fusion of substance from the graph. What will be the state of substance in the graph CD

11. Observe the circuit. Which of the following graph shows the output of the transformer? What is taking place here?

12. The picture shows the path of a ray through a rain drop
(a) Which colours are represented by A and B? (1)
(b) How many times does the ray undergo refraction? Which phenomenon related to the above representation can be observed in nature? (1)

13 Answer any of the two 13 A or 13 B
13.A. Observe the diagram of a transformer Which of the following graph shows the output of the transformer? What is taking place here?
(a) Which type of transformer is depicted here? Write any one of its pecularities ? (1)

(b) What will be the power in the secondary? Justify your answer (1)
(c) Findout the number of turns in the secondary and the current flowing through it. (2)
OR

13.B The diagrams show the current carrying solenoids made of insulated copperwire
(a) Which bulb will glow with less intensity when it is switched on? Justify the answer (2)

(b) Which bulb will not show any change in light intensity when identical soft iron cores are inserted into the solenoid? Justify your answer.