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QUIZ START
#1. Which one of the following quantities has not been expressed in proper units except?
#2. Three students measured the length of needle with a meter rod. Which of the following is correct measurement?
#3. Prefix Pico stands for
#4. Zero error of the instrument is a type of
#5. What are the base units of Planck’s constant h? Remember the energy of a photon is given by hf where f represents the frequency
#6. Identify the correct unit of pressure among these
#7. What is the ratio 1nm / 1μm ?
#8. Dimension of momentum is
#9. A projectile thrown at an angle of 30° has range 10m. Another projectile thrown at an angle of 60° with some initial velocity has range
#10. The speed of efflux is equal to the velocity gained by the falling fluid under the action of gravity through a certain height is known as
#11. The expression for Torricelli’s theorem is given by
#12. A 10 m high tank is full of water. A hole appears in its wall near its bottom. Taking the value of g as 9.8ms^-2 the speed of efflux is
#13. Venturi’s relation is given by
#14. The resolving power in the mth order for a diffraction grating equals to
#15. Light traveling through vacuum enters water. Which characteristic of light does not change?
#16. In a pond, water is 10 m deep. An object is held 15 m above water surface. Locate the image of the object in the water. (Refractive Index of water = 4/3)
#17. Which of the following colors will have minimum critical angle when light passes from glass to air?
#18. Which of the following radiation will be focused farthest from a convex lens?
#19. If a graph is plotted between time period of a pendulum and its length, the graph will be
#20. An object executing SHM has a velocity 3 cm/s when the displacement is 4 cm. It has a velocity of 4 cm/s when the displacement is 3 cm. The amplitude of motion of this object is
#21. A long steel pipe is tapped at its one end. A listener at the other end hears two sounds
#22. The normal temperature of a healthy human body on Kelvin scale is
#23. In which of the following cases Doppler’s effect cannot be observed?
#24. Stress that induces a change in the shape of the body is named as
#25. The SI unit of modulus of elasticity is
#26. If stress is increased beyond the elastic limit, a permanent change in the material is observed. This behavior is called
#27. A container of volume 8 * 10^-4 m^3 occupies 20 g oxygen kept at a temperature of 373K. Calculate oxygen pressure.
#28. The temperature at which the average K.E. of a molecule of a gas will be the same as that of an electron accelerated through 1 volt will be
#29. When a gas is isothermally expanded so that its volume becomes double, the rms velocity
#30. If internal energy of a gas decreases by an amount equal to the external work the gas is undergoing
#31. The kinetic theory of gases breaks down most at
#32. The electronic circuit which inverts the input signal is called
#33. The basic operations of Boolean algebra are
#34. Which expression represents a NOR operation?
#35. In a thermocouple minimum current flows at
#36. Production of heat due to an electric current flowing through a conduction is given by
#37. Resistance of an ideal insulator is
#38. The direction of the induced e.m.f or current is found by the use of
#39. If the coil is wound on an iron core, the flux through it will
#40. The phenomena of producing e.m.f. in the coil due to change of current in the coil itself is called
#41. On decreasing the intensity of incident light
#42. A radio transmitter is working at frequency 880 kHz and power 10 kW. The number of photons emitted per second will be
#43. When a photon of energy 7 eV is made incident on a metal then the emitted electron is stopped by a stopping potential of -5.5 V. The work function of metal will be
#44. The work function of aluminum is 4.2 eV. Light of wavelength 2000 Å is incident on it. The threshold frequency will be
#45. Fission of nuclei is possible because the binding energy per nucleon in them
#46. Starting with a sample of pure Cu_8^66 if it decays into Zn in 15 minutes the corresponding half life is
#47. 222_86 A -> 210_84 B in this reaction how many α and β emissions have occurred
#48. Stress beyond which a permanent deformation is observed in a body is called
#49. If one mole of an ideal gas is heated at constant volume then
#50. A good example of first law of thermodynamics is
