41. A Mirage Occurs Because Of
⚪Diffraction Of Light
⚪Total Internal Reflection By Layers Of Air
⚪Interference Of Light
42. When A Vibrating Tuning Fork Is Placed On A Table A Loud Sound Is Heard. This Is Due To :
⚪Damped Vibrations
⚪Forced Vibrations
⚪Reflection
43. Water Pipes In Hilly Areas Often Burst On A Cold Frosty Night Because
⚪Water In The Pipes Freezes And On Freezing Water Expands So Pipes Break
⚪Frost Makes The Pipes Rusty So They Break
⚪None Of These
44. A Dynamo Is A Device Which
⚪Converts Electrical Energy Into Mechanical Energy
⚪Converts Mechanical Energy Into Electrical Energy
⚪ Creates Mechanical Energy
45. Which One Of The Following Has The Highest Value Of Specific Heat?
⚪Glass
⚪Copper
⚪Lead
46. The Velocity Of Heat Radiation In Vacuum Is
⚪Greater Than That Of Light
⚪Equal To That Of Light
⚪Equal To That Of Sound
47. What Should A Person On A Freely Rotating Turn Table Do To Decrease His (Angular) Speed ?
⚪Spread His Hands Outwards
⚪Raise His Hands Up
⚪Sit Down With Raised Hands
48. Negative Feedback In Amplifiers
⚪Increases Bandwidth And Decreases Noise
⚪Decreases Bandwidth And Decreases Noise
⚪Increases Bandwidth And Increases Noise
49. The Velocity Of Sound Is More Of
⚪Air
⚪ Wood
⚪Steel
50. Damp Clothes Are Dried In Spin Dryers By The Action Of
⚪Central Forces
⚪Centrifugal Forces
⚪Centripetal Forces
51. Name The Process Of Production Of Energy In The Sun
⚪Nuclear Fission
⚪Nuclear Fusion
⚪Ionization
52. The Sound Having A Frequency Of 20 Hertz To 20000 Hertz Are Known As
⚪Ultrasonic’s
⚪Infrasonic
⚪Mega Sonics
53. The Time Period Of A Pendulum When Taken To The Moon Would
⚪Become Zero
⚪Increase
⚪Remain The Same
54. Bolometer Is Used To Measure
⚪Frequency
⚪Velocity
⚪Wavelength
55. The Earth Wire Of A Cable Is Connected To
⚪The Filament Of The Appliance
⚪The Fuse Of The Appliance
⚪The Outer Metallic Body Of The Appliance
56. The Adult Human Of Average Age And Size Has Approximately How Many Quarts Of Blood? Is It:
⚪6
⚪8
⚪7
57. According To Henry’s Law, In Gases, An Increase In Pressure Increase .
⚪Saturation
⚪Volume
⚪Viscosity
58. Which Set Of Conditions Represents The Easiest Way To Liquify A Gas ?
⚪Low Temperature And High Pressure
⚪Low Temperature And Low Pressure
⚪High Temperature And High Pressure
59. Should Cars Have Bumpers That Collapse Under Impact?
⚪No Since The Colliding Car Would Then Ram Into The Occupants And Kill Them
⚪Yes Since They Help To Absorb The Impact Of A Collision And Keep The Occupants Safe
⚪Yes Since The Offending Car Should Get Damaged And Pay For The Mistake
60. What Is The Full Form Of AM Regarding Radio Broadcasting?
⚪Amplitude Matching
⚪Amplitude Modulation
⚪Amplitude Movement
Previous year question peper
sir ye jo work vale questions hote h like … A and B complete a work in 8 days …….? .kuch is type ke questions sir.