Quizsummary
0 of 30 questions completed
Questions:
 1
 2
 3
 4
 5
 6
 7
 8
 9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
Information
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to pass the previous Module's quiz in order to start this quiz
Results
Results
0 of 30 questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
Categories
 Not categorized 0%
 1
 2
 3
 4
 5
 6
 7
 8
 9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 Answered
 Review

Question 1 of 30
1. Question
Two stones are thrown up simultaneously from the edge of a cliff 240 m high with initial speed of 10 m/s and 40 m/s respectively. Which of the following graph best represents the time variation of relative position of the second stone with respect to the first?
(Assume stones do not rebound after hitting the ground and neglect air resistance, take g=10 m/s^{2})
(The figures are schematic and not drawn to scale)
CorrectIncorrect 
Question 2 of 30
2. Question
The period of oscillation of a simple pendulum is Measured value of L is 20.0 cm known to 1 mm accuracy and time for 100 oscillations of the pendulum is found to be 90 s using a wrist watch of 1s resolution. The accuracy in the determination of g is :
CorrectIncorrect 
Question 3 of 30
3. Question
Given in the figure are two blocks A and B of weight 20 N and 100 N, respectively. These are being pressed against a wall by a force F as shown. If the coefficient of friction between the blocks is 0.1 and between block B and the wall is 0.15, the frictional force applied by the wall on block B is :
CorrectIncorrect 
Question 4 of 30
4. Question
A particle of mass m moving in the x direction with speed 2υ is hit by another particle of mass 2m moving in the y direction with speed υ. If the collision is perfectly inelastic, the percentage loss in the energy during the collision is close to :
CorrectIncorrect 
Question 5 of 30
5. Question
Distance of the centre of mass of a solid uniform cone from its vertex is z_{0}^{.} If the radius of its base is R and its height is h then z_{0} is equal to :
CorrectIncorrect 
Question 6 of 30
6. Question
From a solid sphere of mass M and radius R a cube of maximum possible volume is cut. Moment of inertia of cube about an axis passing through its center and perpendicular to one of its faces is :
CorrectIncorrect 
Question 7 of 30
7. Question
From a solid sphere of mass M and radius R, a spherical portion of radius is removed, as shown in the figure. Taking gravitational potential V = 0 at r = ∞, the potential at the centre of the cavity thus formed is :
(G = gravitational constant)
CorrectIncorrect 
Question 8 of 30
8. Question
A pendulum made of a uniform wire of cross sectional area A has time period T. When an additional mass M is added to its bob, the time period changes to T_{M}^{.} If the Young’s modulus of the material of the wire is Y then is equal to :
(g = gravitational acceleration)
CorrectIncorrect 
Question 9 of 30
9. Question
Consider a spherical shell of radius R at temperature T. The black body radiation inside it can be considered as an ideal gas of photons with internal energy per unit volume and pressure If the shell now undergoes an adiabatic expansion the relation between T and R is :
CorrectIncorrect 
Question 10 of 30
10. Question
A solid body of constant heat capacity 1 J/°C is being heated by keeping it in contact with reservoirs in two ways :
(i) Sequentially keeping in contact with 2 reservoirs such that reservoir supplies same amount of heat.
(ii) Sequentially keeping in contact with 8 reservoirs such that reservoir supplies same amount of heat.
In both the cases body is brought from initial temperature 100°C to final temperature 200°C. Entropy change of the body in the two cases respectively is :
CorrectIncorrectHint
Mark Awarded By All Options

Question 11 of 30
11. Question
Consider an ideal gas confined in an isolated closed chamber. As the gas undergoes an adiabatic expansion, the average time of collision between molecules increases as V^{q}, where V is the volume of the gas. The value of q is :
CorrectIncorrect 
Question 12 of 30
12. Question
For a simple pendulum, a graph is plotted between its kinetic energy (KE) and potential energy (PE) against its displacement d. Which one of the following represents these correctly?
(graphs are schematic and not drawn to scale)
CorrectIncorrect 
Question 13 of 30
13. Question
A train is moving on a straight track with speed 20 ms^{−1}. It is blowing its whistle at the frequency heard by a person standing near the track as the train passes him is (passed of sound = 320 ms^{−1}) close to :
CorrectIncorrect 
Question 14 of 30
14. Question
A long cylindrical shell carries positive surface charge σ in the upper half and negative surface charge – σ in the lower half. The electric field lines around the cylinder will look like figure given in :
(figures are schematic and not drawn to scale)
CorrectIncorrect 
Question 15 of 30
15. Question
A uniformly charged solid sphere of radius R has potential V_{0} (measured with respect to ∞) on its surface. For this sphere the equipotential surfaces with potentials have radius R_{1}, R_{2}, R_{3} and R_{4} respectively. Then
CorrectIncorrect 
Question 16 of 30
16. Question
In the given circuit, charge Q_{2} on the 2μF capacitor changes as C is varied from 1μF to 3μF. Q_{2} as a function of ‘C’ is given properly by : (figures are drawn schematically and are not to scale)
CorrectIncorrect 
Question 17 of 30
17. Question
When 5V potential difference is applied across a wire of length 0.1 m, the drift speed of electrons is 2.5 x 10^{−4 } ms^{−1}. If the electron density in the wire is 8 x 10^{28} m^{−3}, the resistivity of the material is close to :
CorrectIncorrect 
Question 18 of 30
18. Question
CorrectIncorrect 
Question 19 of 30
19. Question
Two coaxial solenoids of different radii carry current I in the same direction. Let be the magnetic force on the outer solenoid due to the inner one. Then :
CorrectIncorrect 
Question 20 of 30
20. Question
Two long current carrying thin wires, both with current I, are held by insulating threads of length L and are in equilibrium as shown in the figure, with threads making as angle ‘θ’ with the vertical. If wires have mass λ per unit length then the value of I is :
(g = gravitational acceleration)
CorrectIncorrect 
Question 21 of 30
21. Question
A rectangular loop of sides 10 cm and 5 cm carrying a current 1 of 12 A is placed in different orientations as shown in the figures below :
If there is a uniform magnetic field of 0.3 T in the positive z direction, in which orientations the loop would be in (i) stable equilibrium and (ii) unstable equilibrium?
CorrectIncorrect 
Question 22 of 30
22. Question
An introductory (L = 0.03H) and a resistor (R = 0.15 kΩ) are connected in series to a battery of 15V EMF in a circuit shown below. The key K_{1} has been kept closed for a long time. Then at t=0, K_{1} is opened and key K_{2} is closed simultaneously. At t=1ms, the current in the circuit will be : (e^{5}≅150)
CorrectIncorrect 
Question 23 of 30
23. Question
A red LED emits light at 0.1 watt uniformly around it. The amplitude of the electric field of the light at a distance of 1 m from the diode is :
CorrectIncorrect 
Question 24 of 30
24. Question
Monochromatic light is incident on a glass prism of angle A. If the refractive index of the material of the prism is μ, a ray, incident at an angle θ, on the face AB would get transmitted through the face AC of the prism provided :
CorrectIncorrect 
Question 25 of 30
25. Question
On a hot summer night, the refractive index of air is smallest near the ground and increases with height from the ground. When a light beam is directed horizontally, the Huygens’ principle leads us to conclude that as it travels, the light beam :
CorrectIncorrect 
Question 26 of 30
26. Question
Assuming human pupil to have a radius of 0.25 cm and a comfortable viewing distance of 25 cm, the minimum separation between two objects that human eye can resolve at 500 nm wavelength is :
CorrectIncorrect 
Question 27 of 30
27. Question
As an electron makes a transition from an excited state to the ground state of a hydrogen – like atom/ion :
CorrectIncorrect 
Question 28 of 30
28. Question
Match List – I ( Fundamental Experiment) with ListII (its conclusion) and select the correct option from the choices given below the list :
CorrectIncorrect 
Question 29 of 30
29. Question
A signal of 5 kHz frequency is amplitude modulated on a carrier wave of frequency 2 MHz. The frequencies of the resultant signal is/are :
CorrectIncorrect 
Question 30 of 30
30. Question
An LCR circuit is equivalent to a damped pendulum. In an LCR circuit the capacitor is charged to Q_{0} and then connected to the L and R as shown below :
If a student plots graphs of the square of maximum charge on the capacitor with time(t) for two different values L_{1} and L_{2} (L_{2}>L_{2}) of L then which of the following represents this graph correctly? (plots are schematic and not drawn to scale)
CorrectIncorrect