PRACTICE PAPER - 6 CLASS : X SUBJECT: SCIENCE (only PHYSICS question shown here) (Based on Full Syllabus) M.M.: 80 DURATION: 3 HRS |
GENERAL INSTRUCTIONS: (i) All questions are compulsory. (ii) The question paper has five sections and 12 questions. All questions are compulsory. (iii) Section–A has 4 MCQs and 2 assertion-reason type of 1 mark each; Section–B has 1 questions of 2 marks each; and Section–C has 3 questions of 3 marks each; Section–D has 1 questions of 5 marks each; Section–E has 1 case based question of 4 marks. (iv) Internal choices have been provided in some questions. A student has to attempt only one of the alternatives in such questions. (v) For case study questions in section E, there is one choice in one subpart, with 3 questions based per case study. |
SECTION A (MCQs)
| Q1 | Consider three indices of refraction: (a) glass, water, air (b) air, water, glass (c) air, glass, water (d) water, glass, air |
Q2 | What is the name given to the ability of the eye to see objects at all distances beyond the near point of the eye? (a) myopia (b) hypermetropia (c) presbyopia (d) power of accommodation |
| Q3 | Name the part of the lens through which a ray of light passes without suffering any deviation. (a) Focus (b) Pole (c) Optical centre (d) Centre of curvature |
| Q4 | The special name given to the coil AB which has many circular turns of insulated copper
(a) electromagnet (b) solenoid (c) electric fuse (d) resistor
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Q5 to Q6 are assertion-reasoning based questions. These consist of two statements – Assertion (A) and Reason (R). Answer these questions selecting the appropriate options given below: (a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true but R is not the correct explanation of A. (c) A is true but R is false. (d) A is false but R is true. |
| Q5 | Assertion : For observing traffic at back, the driver mirror’s is convex mirror. Reason: A convex mirror has a much smaller field of view than a concave or plane mirror. |
| Q6 | Assertion : When we see an object, the image formed on the retina is real and inverted. Reason : Light sensitive cells get activated upon illumination and generate electrical signals which are then sent to the brain via the optic nerves. |
SECTION B
Q7 to Q7 are very short answer questions
Q7 | A 2000 W water heater (geyser) is used every day for 90 minutes. Calculate the electrical energy OR V – I graphs for two wires A and B are shown in the figure. If both wires are of the same length and
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SECTION C
Q8 to Q10 are short answer questions
Q8 | We wish to obtain an equal size inverted image of a candle flame on a screen kept at a distance of 4 m from the candle flame. (a) Name the type of lens that should be used. (b) What should be the focal length of the lens and what distance from the lens the candle flame to be placed. (c) Draw a labelled diagram to show the image formation in this case. |
Q9 | (a) Mention any two natural phenomena which occur due to scattering of light. (b) Draw a ray diagram to show the formation of a rainbow in the sky. Mark on the diagram three A – where dispersion of light occurs. B – where internal reflection of dispersed light occurs. C – where refraction of dispersed light occurs. |
Q10 | (a) Determine the direction of force experienced by an alpha particle, which enters vertically downwards in a uniform magnetic field acting horizontally from west to east. (b) State the rule used to find the direction of force in the above case. (c) Under what condition, the force experienced by a moving charge particle in a magnetic field maximum ? OR (a) Draw magnetic field lines due to a current carrying solenoid. (b) State the nature of the magnetic field inside solenoid when a current is passed through it. |
SECTION D
Q11 to Q11 are long answer questions
Q11 | A resistor of resistance R is connected with an incandescent bulb of resistance 6 Ω and another
(i) What term is generally used for such an arrangement of resistors? (1) |
SECTION E
Q12 to Q12 are case-based / data-based questions with 2 to 3 short sub-parts.
Internal choice is provided in one of these sub-parts
Q12 | Neha fixed a sheet of white paper on a drawing board. She placed a bar magnet NS at the centre on the paper and marked its boundary. Then she sprinkled some iron filings uniformly around the bar magnet. When she tapped gently, she observed that the iron filings arranged themselves in a certain pattern as shown below.
(a) Why do iron filings arrange themselves in a particular pattern? (1) (b) What are magnetic field lines? (1) (c) Draw magnetic field lines due to a current carrying circular coil. (2) OR (c) (i) Why two magnetic field lines never intersect? (1) |
