PHYSICS QUESTIONS
Question 1. Equation of a Stationary wave is given by
Option 1 : y = 2A sin kx cos wt
Option 2 : y = A sin k(x-vt)
Option 3 : y = A cos wt / sin x
Option 4 : y = 2 sin at
Question 2. What happens when a cappilary tube is dipped in water in a weightless state
Option 1 : Water level raises
Option 2 : Water level decreases
Option 3 : Raises to the maximum height available
Option 4 : No change
Question 3. Two equal forces acting against each other have equal resultant.What could be the angle between then
Option 1 : 0°
Option 2 : 90°
Option 3 : 120°
Option 4 : 180°
Question 11. A closed pipe of length one meter emitting second overtone is in unision with an open pipe emitting thrid overtone. Find the length of the open pipe.
Option 1 : 1.2 m
Option 2 : 1.6 m
Option 3 : 2.5 m
Option 4 : 3.2 m
Question 5. The focal length of an Objective of a Astronomical telescope is 0.75m and that of it's eyepiece is 0.05 m.Final image is found to be formed at 0.25m.It's magnification is
Option 1 : 18
Option 2 : 125
Option 3 : 12.5
Option 4 : 1.8
Question 6. What is the resistance of a ideal voltmeter
Option 1 : low
Option 2 : 0
Option 3 : high
Option 4 : infinity
Question 7. What is the fundamental frequency produced in an open pipe of length 0.5 m .,if the velocity of sound in air is 340m/sec
Option 1 : 345m/sec
Option 2 : 340Hz
Option 3 : 335Hz
Option 4 : 300Hz
Question 8. Which of the following colour has the minimum critical angle when passed from Glass to Air
Option 1 : Red
Option 2 : Yellow
Option 3 : Violet
Option 4 : Green
Question 9. Rays used to detect holes in metal sheets are
Option 1 : X-Rays
Option 2 : Ultraviolet rays
Option 3 : Infrared Rays
Option 4 : High-velocity Electron beam
Question 10. The Hydrogen spectrum in Ultra-violet rays is called
Option 1 : Lyman
Option 2 : Balmer
Option 3 : Pfund
Option 4 : Paschen
ANSWERS WILL BE POSTED ON 20 MAY.
Tuesday, May 19, 2009
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