Physics IIT Jee Mock Test
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This IIT JEE quiz would help you prepare well for Physics syllabus of CBSE 11 and 12
- 1.
- A.
RI (γ-1)
- B.
PV
- C.
PV I (γ-1)
- D.
γρV I(γ-1)
- 2.Two walls of thickness d1 and d2 and thermal conductivities k1 and k2 are in contact. In the steady state, if the temperatures at the outer surfaces are T1 and T2, the temperature at the outer wall is:
- A.
(k1T1d2+ k2T2d1 ) / ( k1d2+ k2d1)
- B.
(k1T1+ k2d2 ) / ( d1+ d2)
- C.
[(k1d1+ k2d2 ) / (T1+ T2)] * T1T2
- D.
(k1d1T1+ k2d2T2 ) / ( k1d1+ k2d2)
- 3.
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A particle of charge +q an Eî and uniform magnetic field Bk follows a trajectory from P to Q as shown in the figure. The velocities at P and Q are vî and -2vĵ. Which of the following statement(s) is/are correct? (There can be multiple correct answers.)- A.
E=(3/4) * (mv^2/qa)
- B.
Rate of work done by the electric field at P is (3/4) * (mv^3/a)
- C.
Rate of work done by the electric field at P is zero.
- D.
Rate of work done by both the fields at Q is zero.
- 4.
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Two rods, one of aluminium and the other made of steel, having initial lengths l1 and l2 are connected together to form a single rod of length l1+l2. The coefficients of linear expansion for aluminium and steel are αa and αs respectively. If the length of each rod increases by the same amount when their temperatures are raised by tC, then find ratio l1/(l1+l2):- A.
αs/ αa
- B.
αa/ αs
- C.
αs/( αa + αs)
- D.
αa/( αa + αs)
- 5.What is the condition for a single process to be both Isothermal and Isobaric?
- A.
One must use an ideal gas
- B.
Such a process is impossible
- C.
A change of phase is essential
- D.
One may use any real gas such as N2.
- 6.The ends of a stretched wire of length L are fixed at x=0 and x=L. In one experiment the displacement of the wire is y1 = A sin(πx/L) sinωt and energy is E1 and in other experiment its displacement is y2 = A sin (2πx/L) sin2ωt and energy is E2. Then:
- A.
E1=E2
- B.
E2=2E1
- C.
E2=4E1
- D.
E2=16E1
- 7.A 0.25Kg block oscillates on the end of the spring with a spring constant of 200 Newton/meter. If the oscillation is started by elongating the spring 0.15meter and giving the block a speed of 3.0 meter/second, then what is the maximum speed of the block?
- A.
0.13 m/s
- B.
0.18 m/s
- C.
3.7 m/s
- D.
5.2 m/s
- 8.A double slit experiment is performed with light of wavelength 500 nm. A thin film of thickness 2 μm and refractive index 1.5 is introduced in the path of the upper beam. The location of the central maximum will:
- A.
Remain un-shifted.
- B.
Shift downwards by nearly two fringes.
- C.
Shift upward by nearly two fringes.
- D.
Shift downward by 10 fringes.
- 9.
- A.
B*[(u – f) / f]½
- B.
B*[f /(u – f)] ½
- C.
B*[(u – f)/f]
- D.
B*[f / (u – f)]^2
- 10.
- A.
1.25 cm
- B.
2.5 cm
- C.
1.05 cm
- D.
2 cm
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