Gokul academy grs
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This document contains a retrospective sheet from Gokul Academy of Science dated January 10-13, 2012. It includes the following: 1) Questions from January 10th about solving simultaneous equations and defining frequency and how many times a sound source vibrates in a minute. 2) Questions from January 11th about solving systems of equations and defining reverberation and how it can be reduced. 3) Questions from January 12th about solving systems of linear equations, defining longitudinal/transverse waves, and the audible range of sound. 4) Questions from January 13th about finding values of expressions without directly solving for variables, and defining sound, echo, and the long form of SONAR
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The document is a physics exam from Gokul Academy of Science for class 12 students. It contains 7 questions testing concepts of circular motion, including defining radius vector, angular acceleration, and time period. Other questions derive the relationship between linear and angular velocity, write kinematic equations for circular motion, and calculate centripetal force, frequency of a clock, and maximum velocity on a curved road. The exam has a total of 20 marks and covers key concepts relevant to circular motion.Ad
Gokul academy grs
- 1. GOKUL ACADEMY OF SCIENCE 15, Near Gajanan High School, New Subhedar Lay-out, Nagpur-24 Ph.No.0712-2743707 & 6466067 Date :10-01-2012 Gokul Retrospection sheet 01 Std :IX-State ( G.R.S. -01) 10 - 01 - 12 Q.1 Find the following simultaneous equations. i) 2x + y = 5 : 3x - y = 5 ii) x + y 8 = x + 2y 14 = 3x + y - 12 2 3 11 Q.2 i) The frequency of a source of sound is 100Hz. How many time does it vibrate in a minute ii) Define frequency 11 01 12 Q.1 i) Solve: 2x 3y =14; 5x + 2y =16 ii) x + y - xy = 1 4 3 Q.2 i) Define reverberation ii) How can it be reduced 12 -01 12 Q.1 i) 2x + 3y = - 4 ; x - 5y = 11 ii) 5y 3x = 14 ; 3y 2x = 1 iii) 2x y 3 = 0 ; 4x y 5 = 0 Q.2 Define : a) Longitudinal waves b) Transverse waves 2) Which range is known as audible range. 13 -01 -12 Q.1 Find the values of (x + y) and (x - y) from the examples given below without solving for x and y i) 5x + 7y =17 ; 7x + 5y = 19 ii) 7x -5y = -1 ; 5x -7y = - 11 Q.2 1. Define a) Sound b) Echo 2. Write long form of SONAR Go Cool For Exam .