Here you will study MCQs of physics class 12 and advance class also. These FPSC physics lecturer past papers MCQs test of physics are for the studies purpose.
Medical Exams Preparations Question Answers MCQs
Q.1: Two convex lenses of equal focal length f are placed in contact the resultant focal length of the combination is-------- ?
- zero
- focus
- 2 f
- f/2
D
Q.2: In optic fiber transmission system -------- are used regenerate the dim light signal ?
- Diodes
- Repeaters
- Laser
- Transformer
B
Q.3: Ratio of the weight of H-atom to that of an electron is approximately----------- ?
- 18.336
- 1836
- 18360
- 183.6
B
Q.4: Photon of highest frequency will be absorbed when transition takes place from------- ?
- 1st to 5th orbit
- 2nd to 5th orbit
- 3rd to 5th orbit
- 4th to 5th orbit
A
Q.5: When X-rays are passed through successive aluminum sheets what happens to their thickness ?
- increases
- it decreases
- it remains same
- sometimes increases and sometimes decreases
C
Q.6: In n-p-n transistor, p works as--------- ?
- collector
- emitter
- base
- any of above
C
Q.7: In p-n-p transistor the collector current is---------- ?
- equal to emitter current
- slightly less than emitter current
- greater than emitter current
- any of above
B
Q.8: In the transistor schematic symbol, the arrow-------- ?
- is located on the emitter
- is located on the base
- is locate on the collector
- points form north to south
A
Q.9: To obtain a p-type semi-conductor Si Crystal must be doped with foreign atoms whose valency is--------- ?
- 2
- 3
- 4
- 5
B
Q.10: At constant temperature the graph between V and 1/P is-------- ?
- Hyperbola
- Parabola
- A curve of any shape
- A straight lime
D
Q.11: Standard condition STP refer to a gas at ----------- ?
- 76cm 0°C
- 760mm 273K
- 1atm 273K
- all of the above
D
Q.12: 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 has a small constriction near the bulb
- The capillary tube is very narrow
C
Q.13: Boltzman constant K in terms of universal gas constant R and Avagadros number Na is give as--------- ?
- K = RNa
- K = R/Na
- K = Na/Ra
- K = nRNa
B
Q.14: Which quantity is a state function--------- ?
- internal energy
- heat supply
- pressure
- volume
A
Q.15: n an LCR series circuit, if V is the effective value of the applied voltage VR is the voltage across R VL is the effective voltage across L & Vc is the effective voltage across C then---------- ?
-
I
- V = VR+VL+VC
- V2 = VR2+VL2+VC2
- V2 = VR2+(VL-VC)2
- V2 = VL2+(VR-VC)2
C
Q.16: The rectangular coordinate system is also called--------- ?
- Polar coordinate system
- Cartesian coordinate system
- Cylindrical coordinate system
- Spherical coordinate system
B
Q.17: The unit vector in the direction of vector A = 2 i^ -2j^ + k^ is----------- ?
- 2i^ – 2j^ + k^
- (2i^ – 2j^ +k^)/9
- (2i^ – 2j^ +k^)/3
- (2i^ – 2j^ +k^)/5
C
Q.18: Two vectors A and B are making angle θ with each other. The scalar projection of vector B on vector A is written as------ ?
- A.B/A
- A.B/B
- A.cosθ
- Both a and b are correct
A
Q.19: Null vector is a vector which has------------ ?
- Zero magnitude
- No specified direction
- Both A and B are correct
- Both A and B are not correct
C
Q.20: During fusion of hydrogen into helium-------- ?
- Energy is absorbed
- Energy is released
- Mass is increased due to energy absorption
- Mass is reduced due to the energy released
B
