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Q1. When a force is exerted on an object, it can change its
Correct answer : 4
Q2. When a divergent beam of light is incident on a plane mirror, it is reflected back as a .......... beam.
Correct answer : 3
Q3. When a current flowing through a resistance increases four times, how many times heat developed will increase?
Correct answer : 3
Q4. When a current is supplied by a battery which energy is converted into electrical energy?
Correct answer : 3
Q5. When a current carrying conductor placed in a magnetic field experiences a force, what is it due to?
Correct answer : 4
Q6. When a charged particle enters a uniform magnetic field its kinetic energy
Correct answer : 3
Q7. When a capillary tube is dipped in mercury
Correct answer : 1
Q8. When a body rotates about a fixed axis, its motion is a
Correct answer : 3
Q9. When a bimetallic strip is heated ............. expands more than the other metal.
Correct answer : 2
Q10. When 6 KWh is converted into joule, what is its value?
Correct answer : 3
Q11. What will happened to the mass number when gamma particle is emitted?
Correct answer : 3
Q12. What will happen when the direction of current in conductor is reversed, then the deflection of the needle of the compass placed near a current carrying conductor ?
Correct answer : 2
Q13. What will be the resistance when the length of a wire is halved?
Correct answer : 4
Q14. What will happen when a ray of light passes from a denser to rarer medium?
Correct answer : 3
Q15. What will happen when monochromatic light passes from denser to a rarer medium?
Correct answer : 1
Q16. What will be the charge on the other body, when a charged body attracts another body?
Correct answer : 4
Q17. What will be the angle of reflection if light falls normally on the reflecting surface?
Correct answer : 2
Q18. What was the conclusion of the atom by the discovery of natural radioactivity?
Correct answer : 4
Q19. What type of reactor is in Kalpakkam?
Correct answer : 3
Q20. What type of lens the water drop acts like?
Correct answer : 1
Q21. What substances can convection happen in?
Correct answer : 3
Q22. What type of fuel is wood?
Correct answer : 1
Q23. What problem does sulfur dioxide cause?
Correct answer : 2
Q24. What rays are produced when the accelerated electron’s strike the tungsten?
Correct answer : 4
Q25. What should be the maximum velocity of water in pipe of diameter 5 em so that the flow is lamina?
Correct answer : 3
Q26. What particle is obtained during the conversion of proton into neutron?
Correct answer : 2
Q27. What is unit of humidity of atmosphere?
Correct answer : 1
Q28. What is used to detect the presence of un seen water objects
Correct answer : 4
Q29. What is the work done in moving a charge (q) between two points in an electric field?
Correct answer : 4
Q30. What is the work to lift an’ object of mass 1 kg to a vertical height of 1 m?
Correct answer : 2
Q31. What is the wavelength range of visible spectrum?
Correct answer : 2
Q32. What is the wavelength of Xrays?
Correct answer : 2
Q33. What is the wavelength of wave having frequency of 1200 KHz?
Correct answer : 1
Q34. What is the wavelength of Indigo colour?
Correct answer : 1
Q35. What is the wavelength of EM wave produced by Hertz
Correct answer : 3
Q36. What is the voltage required for domestic appliances?
Correct answer : 3
Q37. What is the wavelength of an electron moving with a velocity of 500 km S–1. [me = 9 × 10–31 kg; hz 6.6 × 10–34 js]
Correct answer : 4
Q38. What is the velocity of a - particle?
Correct answer : 3
Q39. What is the value of the force which acts on the liquid surface?
Correct answer : 3
Q40. What is the value of the surface tension of the liquid at the critical temperature.
Correct answer : 1
Q41. What is the value of wave length of electro magnetic wave produced by hertz?
Correct answer : 3
Q42. What is the value of Reynold’s number for the turbulent flow?
Correct answer : 1
Q43. What is the value of refractive index of a medium depends on
Correct answer : 1
Q44. What is the useful energy transfer in a radio?
Correct answer : 1
Q45. What is the use of UV rays?
Correct answer : 3
Q46. What is the use of very high penetrating power of X-ray?