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JEE Main Physics Practical Physics Previous Year Questions with Solutions

April 7, 2019 by Sastry CBSE

JEE Main Physics Practical Physics Previous Year Questions with Solutions

For JEE Main other Engineering Entrance Exam Preparation,  JEE Main Physics Practical Physics Previous Year Questions with Solutions is given below.

Multiple Choice with ONE correct answer
1.In a screw gauge, the zero of main scale coincides with fifth division of circular scale in figure (i) The circular division of screw gauge are 50. It moves 0.5 mm on main scale in one rotation. The diameter of the ball is in figure (ii) is [2006-3 marks]
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-1
Ans.
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-7

JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-2
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-3
Ans.
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-8

3.A student performs an experiment to determine the Young’s modulus of a wire, exactly 2m long, by Searle’s method. In a particular reading, the student measures the extension in the length of the wire to be 0.8mm with an uncertainty of ± 0.05mm at a load of exactly 1.0 kg. The student also measures the diameter of the wire to be 0.4 mm with an uncertainty of ± 0.01mm- Take g = 9.8m/s2 (exact). The Young’s modulus obtained from the reading is [2007-3 marks]
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-4
Ans.
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-9
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-10

4.Students I,II and III perform an experiment for measuring the acceleration due to gravity (g) using a simple pendulum. They use different lengths of the pendulum and/or record time for different number of oscillations. The observations are shown in the table. Least count for length =0.1cm Least count for time = 0.1s
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-5
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-6
Ans.
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-11
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-12

5.A vernier calipers has 1 mm makes on the main scale. It has 20 equal divisions on the vernier scale which match with 16 main scale divisions. For this vernier calipers, the least count is
a) 0.02 mm b) 0.05 mm
c) 0.1 mm d) 0.2 mm

Ans.
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-13

Subjective / Numerical integer type
6.If nth division of main scale coincides with (n +1)th  divisions of vernier scale. Given one main scale division is equal to a units. Find the least count of the vernier. [2003-2 marks]
Ans.
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-14

7.A screw gauge having 100 equal divisons and a pitch of length 1 mm is used to measure the diameter of a wire of length 5.6 cm. The main scale reading is 1 mm and 47th circular division coincides with the main scale. Find the curved surface area of wire in  cm2  to appropriate significant figure. (use pi = 22/7) [2004-2 marks]
Ans.
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-15
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-16

8.In a Searle’s experiment, the diameter of the wire as measured by a screw gauge of least count 0.001 cm is 0.050 cm. The length, measured by a scale of least count 0.1 cm, is 110.0 cm. When a weight of 50 N is suspended from the wire, the extension is measured to be 0.125 cm by a micrometer of least count 0.001 cm. Find the maximum error in the measurement of Young’s modulus of the material of the wire from this data [2004-2 marks]
Ans.
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-17

9.The side of a cube is measured by vernier callipers (10 divisions of a vernier scale coincide with 9 divisions of main scale, where 1 division of main scale is 1 mm). The main scale reads 10 mm and first division of vernier scale coincides with the main scale. Mass of the cube is 2.736 g. Find the density of the cube in appropriate significant figures.   [2005-2 marks]
Ans.
JEE Main Previous Year Papers Questions With Solutions Physics Practical Physics-18

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Filed Under: Entrance Exam Tagged With: JEE Main Physics

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