Kurukshetra University 2007 A.M.I.E.T.E Information Technology Physics - Question Paper

part I

I] A] 1) Prove that efficiency of a machine is the ratio ranging from true mechanical advantage and
velocity ratio. (3mks)


2) A resistance of 1500 N is overcome by a machine of V.R six and efficiency 80%. obtain
(1) Mechanical advantage (3mks)
(2) Effort needed to overcome resistance.

B] 1) describe impulsive force. elaborate the its units in CGS system and SI system? (3mks)

2) A bullet of mass 40 gm moving with a velocity of 180 km/hr-1 is brought to rest on hitting a tree
in 0.02 sec. obtain
(a) Impulse
(b) avg. retarding force. (3mks)


C] 1) Complete the subsequent diagram indicating the focal lengths of the lenses.



2) Distinguish ranging from real and virtual image. (3)

3) Show using a ray diagram how a converging lens can be used to form a virtual image. (3)

D] 1) Derive a formula to discuss the relation ranging from wave velocity, frequency and wavelength. (3)

2) 500 waves pass through a point in two sec. compute the time period. (1)

E] 1) What do you mean by specific heat capacity of a substance? elaborate its units in
CGS system and SI system? (5)

2) What is the specific heat capacity of water in the SI system? (2)

F] 1) Name the material commonly used for:-
(a) The Fuse
(b) The Earthing. (2)

2) provide reasons for your answers to the above ques.. (2)

G] 1) provided beneath are the different primary colours and the colours found after mixing them.
Keeping this in mind fill in the blanks with the accurate colours: - (4)
a) Yellow pigment +Cyan pigment =__________.
b) Yellow pigment +___________ = Red pigment.
c) _____________+____________ = Blue pigment.

2) Which colours are absorbed by blue pigment? (2)

Earning:   Approval pending.