INTERMEDIATE
PART-I
(CLASS)  2013
Objective

Q.1

• Venturi relation is given as:-

(A) P = ½  v2
(B) p1 – p2 = ½ v2/2
(C) P1 – P2 = ½ V2/1 – ½ V2/2
(D) V2 =

• Acceleration of projection of a particle moving around a circle is given by relation:

(A) a = -gx/
(B) a = -w2 x
(C ) a = -k/m x
(D) a = -g

• Appropriate range of audible frequencies for younger person is:

(A) 20 – 200 Hz
(B) 20 – 2,000 Hz
(C) 20- 20,000 Hz
(D) 2,000 – 20,000 Hz

• For same mass and length if tension of a vibrating string is increased by four times then speed of wave, increases by :

(A) 2 times
(B) 4 times
(C) 6 times
(D)  times

• Beats are detectable easily upto frequency difference between two sounds is:

(A) 2 Hz
(B) 6 Hz
(C) 10 Hz
(D) 32 Hz

• Beats are detectable two adjacent dark fringes is given by:

(A)
(B)
(C)
(D)

• Using a graded index fibre, the time difference is reduced to about:

(A) 33 ns per 100 km
(B) 33 ns per km
(C) 1 ns per km
(D) 1 ns per 100 km

• If the focal length of objective and eye piece is 0.5 m and 10 cm respectively , then magnifying power of telescope will be :

(A) 5
(B) 0.5
(C) 10
(D) 20

• Average translational K.E of molecules for an ideal gas is given by the relation :

(A) 2/3 KT
(B) 3/2 KT
(C) 2/3K T
(D) 3/2K T

• Significant figures in 1.00110 are :

(A) 6
(B) 5
(C) 3
(D) 1

• Projection of  and  will be given as:

(A)  
(B)  .  
(C)
(D)

• For an angle less than _______ the height reached by projectile and the range both will be less :

(A) 15°
(B) 30°
(C) 45°
(D) 60°

• Rocket equation is given as :

(A) a = M/mv
(B) a = Mv/m
(C) a = mv/M
(D) a = m/Mv

• Which one is renewable source of energy?

(A) Coal
(B) Natural Gas
(C) Sunlight
(D) Uranium

• If angular velocity of a particle rotating in a circle is doubled then its moment of inertia:

(A) Remains the same
(B) Becomes half
(C) Becomes Doubled
(D) Becomes 4 times

• Minimum number of geostationary satellites required to cover whole the populated world:

(A) 1
(B) 3
(C) 126
(D) 130

• Moment of inertia of thin rod is given by relation :

(A) 1/ 12 ²
(B) 2/5 ²
(C) 12²
(D) 5/7 ²

PHYSICS
PAPER-I 
(NEW COURSE)
TIME ALLOWED: 3.10hour
SUBECTIVE
MAXIMUM MARKS: 83
NOTE - Write same question number and its part number on answer book, as given in five question paper.

SECT1ON-I

2. Attempt any eight parts.  (8 x 2 = 16) 

• Give the drawback to use the period of a pendulum  as a time standard.
  
• The period  of simple pendulum  is measured by a stopwatch.
  
• What type of error are possible in the time period?
  
• How many seconds are there I  1 year?
  
• Write the dimension of  
  (i) Pressure   
  (ii) Density
  
• Can a vector have a component greater than the vactor ‘s magnitude?
  
• Can you add zero to a null vector?
  
• Can a body rotate about is center of gravity under the section of its weight?
  
• Can the velocity of the object reserve the direction  when acceleration is constant? If so, give an example.
  
• At what point or points inn its path does a projectile have its minimum speed, its maximum speed?
  
• Find the velocity of a heavy body when it elastically collides with a stationary light body?
  
• Drive a relation between impulse and liner momentum.
  
• Explain how the swing is produced in a fast moving cricket ball?

Q.No.3

• Calculate the work done in Kilo Joules in lifting a mass of 10kg through a vertical height of 10m.
  
• A girl drops a cup form a certain height, which break into places.
  
• What energy changes are involved?
  
• What is Escape velocity?
  
• What is meant by Moment of Intertia? Explain its significance.
  
• Show that orbital angular momentum L0 = mvr
  
• Explain the rotational K.E of a Disc and a Hoop.
  
• Does frequency depend on amplitude for Harmonic Oscillators?
  
• Can we realize an ideal simple pendulum?
  
• What is phase?
  
• Is it possible for two identical waves traveling in the same direction along a string to give rise to stationary waves?
  
• Explain why sound of travels faster in warm air than in cool air?
  
• Define Doper effect

Q.No.4

• State Hygen’s principle.
  
• Under what condition two or more sources of light behave as coherent sources?
  
• Why the Polaroid Sunglasses are better than ordinary sun glasses?
  
• How the light signal is transmitted through optical fiber?
  
• When object line within in principal focus of convex lens what is the nature of image and where it is formed?
  
• Is it possible to convert internal energy into mechanical energy? Explain with an example.
  
• Why is the average velocity of the molecules in gas zero but the average of the square of velocities is not zero?
  
• State cannot Theroem.
  
• A theromes  flask is shaken which contain milk . Does the temperature of milk rise?

SECTION-II

NOTE:- Attempt any three question of the following:

5 (a) Define rectangular components of vector. How two vector can be added by rectangular components method?
(b) A football is thrown upward at an angle of 300 with respect to the horizontal.To throw it 40m pass, what must be the initial speed of the bell?

6 (a) State and explain Work energy principle.
(b) A 1000 kg car is turning round a corner at ms^-1 as I it travels along an are of a circle.If the radius of circular path is 10m, how large a force must be exerted by the pavement
On the tyres to hold the car in the circular path?

7 (a) Define simple pendulum and device relation for its time period.
(b) A pipe has a length 1m . Determine the frequency of the fundsmental and the first harmonics if the pipe is open at both ends. (speed of sound = 340ms^-1 (3)

8 (a) Define simple Microscope. Fine its Magnification .
(b) In a double slite experiment the second order maximum occurs at θ = 0.25”. The wavelength is 650 mm. Determine the slite separation.

9 (a) Explain Iso thermal  and adiabatic Processes.
(b) A water hose with an internal dismmeter of 20mm at the outlet discharges 30 Kg  of water inb 60 second. Calculate the water speed at the outlet, Assume the density of water in 100 Kg/M and its flow is steady .

SECTION –III
(PARACTICAL PART)

10.(A) Write answers of any four parts .

• How does the electronic timer measures time of free fall accurately?
  
• Why a screw gauge is more accurate than a vernier calipers?
  
• How the weight of a metric rod is found when it is suspended to two spring balances?
  
• The velocity of sound at 0”C is 332 ms-1. What its velocity at 25 ﮿ C ?
  
• The index of refraction of glass with respect to air is 3/2.
  
• What is the index of refraction of air with respect to glass
  
• What are the conditions of total internal Reflection?
  
• What are the source of error during the experimental verification of law of mass of vibrating strutched string using a sonometer?
  
• Design table of observation to fine acceleration due to gravity by oscillating mass spring system .

(B) Write down the brief procedure to fine experimentally the unkown weight of body by the method of vector addition of forces.
Wrtie down the brief procedure to fine experimentally the refractive index the material of a prism by critical angle method.
(C) Answer the following question on the basis of graph drawn below.

• What is the relation between ‘f’ and ‘X’?
  
• Find the value of spring constant
  

Answer the following question on the basis of graph drawn below
From the graph potted  at point ‘P’

• Find the value of I/P and I/q
• Find the value of focal length of lens.