XI Physics Model Paper 2024 || Numerical Solution || Section B Solution

Описание: 2.vi) Prove that following equations are dimensionally correct:
vii) A turtle starts at the origin and moves with the uniform speed of v cm s o 10 / in the direction of 25o to the horizontal.
a) Find the coordinates of a turtle 10 seconds later. b) How far did the turtle walk in 10 seconds?
viii) A golf club exerts an average force of 800 N on a golf ball for 0.02 seconds. If the initial velocity of the ball is 40 m/s and its final velocity is 60 m / s , what is the impulse experienced by the ball?
ix) The International Space Station orbits at an altitude of 400km above the surface of the Earth. What is the space
station's orbital velocity?
x) Calculate the viscous drag on a drop of oil of 0.1 mm radius falling through air at its terminal velocity.
(viscosity of air =1.8 10 Pa-s;  5 density of oil  850 / kg m3 ).
xi) Three resistors 1 , 2 ,   and 3  are combined in series. What is the total resistance of the combination? If the combination is connected to a battery of e.m.f 24V and negligible internal resistance, obtain the potential
drop across each resistor.
xii) A pendulum of length 75 cm and mass 2.5 kg swings with a mechanical energy of 0.015 J . what is its amplitude?
xiii) A source of sound and listener are moving towards each other with velocities which are 0.5 times and 0.2 times
the speed of sound respectively. If the actual frequency of sound is 2000 Hz, calculate the percentage change in
the frequency with respect to the listener.
xiv) In a Newton's ring experiment the diameter of the 16th bright ring was found to be 0.653 cm. If the radius of curvature of the lens is 10 cm, find the wavelength of light.
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