PHYSICS QUESTIONS

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.