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physics mcqs with answers
In An Electron Microscope, We Use Energetic Particles Because Of______
Penetrating Power Is High | |
All The Above Reasons | |
Kinetic Energy Is Large | |
Wavelength Is Very Short |
In An Angular Motion, Newtons Second Law Of Motion Is______
F=Τp/It | |
Στ = I Α | |
F=Ma | |
All Above |
In A Semiconductors The Charge Carriers Are ______
Electron And Holes Both | |
All Of The Above | |
Holes Only | |
Electrons Only |
In A Plane Polarized Light ______
Vibration In All Direction | |
No Vibration At All | |
Vibration In Two Mutually Perpendicular Directions | |
Vibration Take Place In A Direction Perpendicular To The Direction Of Propagation Of Light |
In A Photoelectric Effect Monochromatic Light Is Incident On A Metal Surface.
Becomes Double | |
Remains Same | |
First Increases Then Decrease Because Of The Curvilinear Graph | |
Becomes Half |
In A Multi Range Ammeter As The Range Increases ______
Shunt Value Increases | |
Shunt Value Remains The Same | |
Shunt Value Decreases | |
None Of The Above |
In A Half-Wave Rectifier The R.M.S. Value Of The A.C. Component Of The Wave Is______
Zero | |
More Than D.Value | |
Equal To D.Value | |
Less Than D.Value |
In A Clinical Thermometer The Mercury In The Capillary Tube Does Not Contract Once Removed From The Patient Because______
Mercury Takes A Long Time To Contract | |
The Amount Of Mercury Use Is Very Small | |
The Capillary Tube Is Very Narrow | |
The Capillary Tube Has A Small Constriction Near The Bulb |
Image Of An Object 5 Mm High Is Only 1 Cm High. Magnification Produced By Lens Is______
0.5 | |
1 | |
0 | |
2 |
If We Whirl A Stone At The End Of A String In The Vertical Circle, It Is Likely To Break When The Stone Is______
At The Lowest Point | |
At The Highest Point | |
At The Point Where Gravity Is Not Acting | |
At Any Point During Motion |
If Velocity Is Doubled Then______
Momentum And K.E. Remain Same | |
Momentum Increases 4 Times And K.E Increases 2 Times | |
Momentum Increases 2 Times And K.E Increases 4 Time | |
Momentum Increases 2 Times And K.E Increases Constant |
If The Wavelength Of Incident Radiation Is Increased In Photoemission Then______
The Minimum Kinetic Energy Of The Photoelectrons Increases | |
The Average Kinetic Energy Of The Photoelectrons Decreases | |
The Minimum Kinetic Energy Of The Photoelectrons Decreases | |
The Maximum Kinetic Energy Of The Photoelectrons Increases |
If The Volume Of A Gas Is Held Constant And We Increase Its Temperature Then______
Its Pressure Is Constant | |
Its Pressure Falls | |
Its Pressure Rises | |
Any Of Above |
If The Pressure Of A Given Gas Is Held Constant Its Density Is Inversely Proportional To Its Absolute Temperature.
Ideal Gas Law | |
Avagadros Law | |
Charles Law | |
Boyles Law |
If The Plane Of The Rectangular Coil Is Parallel To The Magnetic Field (I.E Radial Magnetic Field) The Torque On The Coil Is______
Tanφ | |
Τ = Niab | |
Sinφ | |
Cosφ |
If The Length Of The Second Pendulum Becomes Four Times, Then Its Time Period Will Become______
2 Times | |
4 Times | |
6 Times | |
8 Times |
If The Density Of Atoms Remain Same Along Any Direction In A Crystal Is Called______
Homogeneity | |
Isotropy | |
Cleavage | |
Symmetry |
If Stretching Force T Of Wire Increases, Then Its Frequency ______
Remains The Same | |
Any Of Above | |
Increases | |
Decreases |
If One Or More Of The Neutrons Emitted During Fission Cab Be Used To Build Up Further Fission Then The Reaction Is Self-Sustained And Is Known As ______
Fission Reaction | |
Chain Reaction | |
Fusion Reaction | |
Chemical Reaction |
If N Number Of The Photon Is Striking On A Metal Surface Then Total Momentum Exerted Is______
None | |
0 | |
P | |
N |
If Moon Radius Is 1600 Km And G On Its Surface Is 1.6 Ms-2 Then The Escape Velocity On The Moon Is ______
2263ms-1 | |
71.6 Ms-1 | |
1600 Ms-1 | |
50.6 Ms-1 |
If East, West, North, South, Up And Down Are Representing The Direction Of Unit Vectors, Then East X South Has The Direction Along______
West | |
Up | |
Down | |
North |
If Capacitance Of L-C Circuit Is Made Four Times Then Frequency Of The Circuit Becomes______
None | |
One Half | |
Four Times | |
Twice |
If An Object Is Placed Away From 2f Of A Converging Lens Then The Image Will Be______
Virtual | |
Virtual And Erect | |
Real And Inverted | |
Real And Erect |
If A=B, Which Of The Following Is Not Correct ?
Ab^ = Ba^ | |
A.B = A^ B^ | |
|A| = |B| | |
|A^| = |B^| |