RRB JE 30th May 2019 Shift-2
Instructions
For the following questions answer them individually
Question 71
Lactometers, which are used to determine the purity of sample of milk, works on which principle?
Question 74
A chord of length 8 cm subtends an angle $$60^\circ$$ at the centre. What is the radius of the circle?
Question 76
A 270 m long train running at a speed of 120 km/h crosses another train running in opposite direction at the speed of 80 km/h in 9 seconds. What is the length of the other train?
Question 78
A pendulum of length 'l' swings through an angle of $$45^\circ$$ and describes an arc of length 15.4 cm. Find the value of 'l'.
