Quizsummary
0 of 47 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
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
Information
The quiz will load in 5 seconds, if not click on “Start Quiz” button below
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 finish following quiz, to start this quiz:
Results
0 of 47 questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 points, (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
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 Answered
 Review

Question 1 of 47
1. Question
If C be the capacitance and V be the electric potential, then the dimensional formula of CV^{2} is

Question 2 of 47
2. Question
The height y and the distance x along the horizontal plane of a projectile on a certain planet(with no surrounding atmosphere) are given by y = 8t – 5t^{2} meter and x = 6t, where t is in seconds. The velocity with which the projectile is projected is __________

Question 3 of 47
3. Question
A body of mass 5 kg is thrown vertically up with a kinetic energy of 490 J. The height at which the kinetic energy of the body becomes half of the original value is _____ (acceleration due to gravity = 9.8 ms^{2})

Question 4 of 47
4. Question
A solid sphere of mass ‘m’ rolls down an inclined plane without slipping, starting from rest at the top of an inclined plane. The linear speed of the sphere at the bottom of the inclined plane is ‘v’. The kinetic energy of the sphere at the bottom is ______

Question 5 of 47
5. Question
Two satellites of mass m and 9 m are orbiting a planet in orbits of radius R. Their periods of revolution will be in the ratio of

Question 6 of 47
6. Question
The following four wires of length L and radius r are made of the same material. Which of these will have the largest extension, when the same tension is applied?

Question 7 of 47
7. Question
The resultant of two forces acting at an angle of 120^{o} is 10 kg is perpendicular to one of the forces. The force is

Question 8 of 47
8. Question
Eight equal drops of water are falling through air with a steady velocity of 10 cm s^{1}. If the drops combine to form a single drop big in size, then the terminal velocity of this big drop is _______

Question 9 of 47
9. Question
Two capillary tubes of different diameters are dipped in water. The rise of water is _____

Question 10 of 47
10. Question
A perfect gas at 27 ^{o}C is heated at constant pressure so as to double its volume. The increase in temperature of the gas will be

Question 11 of 47
11. Question
Three identical rods A, B and C are placed end to end. A temperature difference is maintained between the free ends of A and C. The thermal conductivity of B is THRICE that of C and HALF of that of A. The effective thermal conductivity of the system will be _______ (K_{A} is the thermal conductivity of rod A)

Question 12 of 47
12. Question
The quantities of heat required to raise the temperatures of two copper spheres of radii r_{1} and r_{2} (r_{1} = 1.5 r_{2}) through 1 K are in the ratio of _____

Question 13 of 47
13. Question
A particle executing a simple harmonic motion has a period of 6 sec. The time taken by the particle to move from the mean position to half the amplitude, starting from the mean position is ______

Question 14 of 47
14. Question
The equation of a wave is given by y = 10 sin[(2πt/45) + α]. If the displacement is 5 cm at t = 0, then the total phase at t = 7.5 sec is ___________

Question 15 of 47
15. Question
Two tuning forks, A and B, produce notes of frequencies 258 Hz and 262 Hz. An unknown note sounded with A produces certain beats. When the same note is sounded with B, the beat frequency gets doubled. The unknown frequency is ______

Question 16 of 47
16. Question
A wire under tension vibrates with a fundamental frequency of 600 Hz. If the length of the wire is doubled, the radius is halved and the wire is made to vibrate under oneninth the tension. Then the fundamental frequency will become _____

Question 17 of 47
17. Question
Faintest stars are called ______

Question 18 of 47
18. Question
Wavelength of given light waves in air and in a medium are 6000 Å and 4000 Å respectively. The critical angle is

Question 19 of 47
19. Question
The time required for the light to pass through a glass slab (refractive index = 1.5) of thickness 4 mm is _______ ( c = 3 × 10^{8} ms^{1}, speed of the light in free space)

Question 20 of 47
20. Question
A prism having refractive index 1.414 and refracting angle 30^{o} has one of the refracting surfaces silvered. A beam of light incident on the other refracting surface will retrace its path, if the angle of incidence is ____

Question 21 of 47
21. Question
A planoconvex lens has a maximum thikness of 6 cm. When placed on a horizontal table with the curved surface in contact with the table surface, the apparent depth of the bottom most point of the lens is found to be 4 cm. If the lens is inverted such that the plane face of the lens is in contact with the surface of the table, the apparent depth of the center of the plane face is found to be 17/4 cm. The radius of the curvature of the lens is______

Question 22 of 47
22. Question
Two thin lenses have a combined power of +9D. When they are separated by a distance of 20 cm, their equivalent power becomes +27/5 D. Their individual powers (in diopters) are _____

Question 23 of 47
23. Question
Wavefront is the locus of all points, where the particles of the medium vibrate with the same _____

Question 24 of 47
24. Question
Two monochromatic light waves of amplitudes 3A and 2A interfering at a point have a phase difference of 60^{o}. The intensity at that point will be proportional to ______

Question 25 of 47
25. Question
Consider the following statements in case of Young’s double slit experiment.
 A slit S is necessary if we use an ordinary extended source of light
 A slit S is not needed if we use an ordinary but well collimated beam of light
 A slit S is not needed if we use a spatially coherent source of light
Which of the above statements are correct?

Question 26 of 47
26. Question
A parallel beam of light of wavelength 6000 Å gets diffracted by a single slit of width 0.3 mm. The angular position of the first minima of diffracted light is _____

Question 27 of 47
27. Question
The critical angle of a certain medium is Sin^{1}(3/5). The polarizing angle of the medium is ______

Question 28 of 47
28. Question
Two identical charged spheres of material density ‘ρ’, suspended from the same point by inextensible strings of equal length make an angle ‘θ’ between the strings. When suspended in a liquid of density ‘σ’ the angle θ remains the same. The dielectric constant ‘K’ of the liquid is ______

Question 29 of 47
29. Question
The electric field at a point due to an electric dipole, on an axis inclined at an angle θ (<90^{o}) to the dipole axis, is perpendicular to the dipole axis, if the angle θ is

Question 30 of 47
30. Question
A conductor wire having 10^{29} free electrons/m^{3} carries a current of 20A. If the crosssection of the wire is 1 mm^{2}, then the drift velocity of electrons will be ______ (e = 1.6 × 10^{19} C).

Question 31 of 47
31. Question
A resistor has a color code of green, blue, brown and silver. What is its resistance?

Question 32 of 47
32. Question
A particle of charge ‘e’ and mass ‘m’ moves with a velocity ‘v’ in a magnetic field ‘B’ applied perpendicular to the motion of the particle. The radius ‘r’ of its path in the field is _______

Question 33 of 47
33. Question
The deflection in a moving coil galvanometer is reduced to half when it is shunted with a 40 Ω The resistance of the galvanometer is _______

Question 34 of 47
34. Question
A current of (2/√3)A produces a deflection of 60^{o} in a tangent galvanometer. The reduction factor is _______

Question 35 of 47
35. Question
In an A.C. circuit, V and I are given by V = 150 Sin(150t) volt and I = 150 Sin[150t + (π/3)] ampere. The power dissipated in the circuit is

Question 36 of 47
36. Question
The energy stored in an inductor of self inductance ‘L’ henry carrying a current of ‘I’ ampere is_____

Question 37 of 47
37. Question
A transformer works on the principle of _______

Question 38 of 47
38. Question
Flash spectrum confirms a/an _________

Question 39 of 47
39. Question
The photoeletrical threshold wavelength for the silver is λ_{0}. The energy of the electron ejected from the surface of the silver by an incident wavelength λ(λ < λ_{0}) will be ________

Question 40 of 47
40. Question
Rutherford’s atomic model could account for _______

Question 41 of 47
41. Question
When an electron jumps from the orbit n = 2 to n = 4, then wavelength of the radiations absorbed will be ___________ (R is Rydberg’s constant)

Question 42 of 47
42. Question
The thermonuclear reaction of hydrogen inside the stars is taking place by a cycle of operations. The particular element which acts as a catalyst is ____________

Question 43 of 47
43. Question
The ratio of minimum wavelength of Lyman and balmer series will be ________

Question 44 of 47
44. Question
The fraction of the initial number of radioactive nuclie which remain undecayed after half of a halftime of the radioactive sample is ______

Question 45 of 47
45. Question
1 curie represents _____________

Question 46 of 47
46. Question
An electron of mass ‘m_{e}’ and a proton of mass ‘m_{p}’ are moving with the same speed. The ratio of their deBroglie’s wavelengths λ_{e}/ λ_{p} is _______

Question 47 of 47
47. Question
If the scattering intensity of a liquid is 8 units at a wavelength of 500 nm, then the scattering intensity at a wavelength of 400 nm will be approximately _____