CBSE Class 11 Physics Question Paper Set 15 Solved

CBSE Class 11 Physics Question Paper Set O Solved. Students can download the last year board exams question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations. 

1 One end of a string of length l is connected to a particle of mass m and the other to a small peg on a smooth horizontal table. If the particle moves in a circle with speed v then what is the net force on the particle (directed towards the centre) 

2 Why does a cricket player lower his hands while taking the catch? 

3 A bob of mass 0.1 kg hung from the ceiling of a room by a string 2 m long is set into oscillation. The speed of the bob at its mean position is 1 m s^-1. What is the trajectory of the bob if the string is cut when the bob is (a) at one of its extreme positions, (b) at its mean position? 

4 Two identical ball bearings in contact with each other and resting on a frictionless table are hit head-on by another ball bearing of the same mass moving initially with a speed V. If the collision is elastic, which of the following is a possible result after collision?

5 Draw the position time graph for two objects having non zero relative velocity. 

6 Ten one-rupee coins are put on top of each other on a table. Each coin has a mass m. Give the magnitude and direction of 

(a) the force on the 7th coin (counted from the bottom) due to all the coins on its top, 

(b) the reaction of the 6th coin on the 7th coin.

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