MCQOPTIONS
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MCQOPTIONS
This section includes 754 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
The net charge on n-type material is____________________? |
| A. | Positive |
| B. | Negative |
| C. | Both positive and negative |
| D. | Neutral |
| Answer» E. | |
| 252. |
The natural frequency of simple pendulum depends upon_______________? |
| A. | It’s mass |
| B. | It’s length |
| C. | Square of its length |
| D. | The square root of its length |
| Answer» E. | |
| 253. |
The name of the photon for quantum of light was proposed by________________? |
| A. | Ampere |
| B. | Plank |
| C. | Thomson |
| D. | Einstein |
| Answer» E. | |
| 254. |
The most useful tracer is_________________? |
| A. | Sr-90 |
| B. | I-131 |
| C. | CA-41 |
| D. | C-14 |
| Answer» E. | |
| 255. |
The most suitable unit for expressing nuclear radius is_______? |
| A. | Angstrom |
| B. | Micro |
| C. | Nano meter |
| D. | Fermi |
| Answer» E. | |
| 256. |
The most fundamental of all sciences which provides basic principles and fundamental laws to other branches of science is_________? |
| A. | biology |
| B. | physics |
| C. | information technology |
| D. | chemistry |
| Answer» C. information technology | |
| 257. |
The minimum wavelength of X-rays produced by the bombardment of electrons on the screen of a television set where the accelerating potential is 2.0K V will be______________? |
| A. | 6.2 x 10-10m |
| B. | 9.1 x 10-18m |
| C. | 3.11 x 10-10m |
| D. | 4 x 10-10m |
| Answer» B. 9.1 x 10-18m | |
| 258. |
The minimum wavelength of X-rays can further be reduced by _______________? |
| A. | Reducing the pressure or cooling the target |
| B. | Increasing the temperature of the filament |
| C. | Using a target element of higher atomic number |
| D. | Increasing the potential difference between the cathode and the target |
| Answer» E. | |
| 259. |
The minimum distance between an object and its real image in a convex lens is_____________? |
| A. | 2 f |
| B. | 2.5 f |
| C. | 3f |
| D. | 4f |
| Answer» E. | |
| 260. |
The metastable state for an atom in laser light is_____________? |
| A. | 10-4 sec |
| B. | 10-5 sec |
| C. | 10-3 sec |
| D. | 10-8 sec |
| Answer» D. 10-8 sec | |
| 261. |
The maximum safe limit dose for persons working in a nuclear power station is ________________? |
| A. | 1 rem per week |
| B. | 5 rem per week |
| C. | 4 rem per week |
| D. | 3 rem per week |
| Answer» C. 4 rem per week | |
| 262. |
The mass-energy relation is the outcome of____________? |
| A. | Quantum theory |
| B. | General theory of relativity |
| C. | Special theory of relativity |
| D. | None of these |
| Answer» D. None of these | |
| 263. |
The mass attached to a spring executes ? |
| A. | Vibratory motion |
| B. | Rotatory motion |
| C. | S.H.M |
| D. | Both A and C |
| Answer» E. | |
| 264. |
The magnitude of i^. (j^ x k^) is________________? |
| A. | 0 |
| B. | 1 |
| C. | -1 |
| D. | i^ |
| Answer» C. -1 | |
| 265. |
The magnitude of the cross product is equal to the dot product between them. The angle between the two vectors is________________? |
| A. | 30° |
| B. | 45° |
| C. | 60° |
| D. | 180° |
| Answer» C. 60° | |
| 266. |
The magnetic field strength of solenoid is__________________? |
| A. | B = μNI |
| B. | B = μN/I |
| C. | B = μnI |
| D. | Both B and C |
| Answer» E. | |
| 267. |
The locus of all points in a medium having the same phase of vibration is called____________________? |
| A. | crest |
| B. | trough |
| C. | wavelength |
| D. | wave front |
| Answer» E. | |
| 268. |
The linear momentum of an X-ray photon of wavelength 0.1A is_______________? |
| A. | 6.625x1023N-s |
| B. | 66.25x1023N-s |
| C. | 662.5x1023N-s |
| D. | data is insufficient |
| Answer» B. 66.25x1023N-s | |
| 269. |
The length of the second pendulum is_________________? |
| A. | 100 cm |
| B. | 99 cm |
| C. | 99.2 cm |
| D. | 98 cm |
| Answer» D. 98 cm | |
| 270. |
The length of the second pendulum is________________? |
| A. | 100 cm |
| B. | 99 cm |
| C. | 99.2 cm |
| D. | 98 cm |
| Answer» D. 98 cm | |
| 271. |
The least distance of distinct vision for a normal eye is_______________? |
| A. | 15 cm |
| B. | 25 cm |
| C. | 30 cm |
| D. | 40 cm |
| Answer» C. 30 cm | |
| 272. |
The least count of Vernier caliper is ________ containing 10 Vernier scale divisions? |
| A. | 0.001mm |
| B. | 0.01mm |
| C. | 0.1mm |
| D. | 0.0001mm |
| Answer» D. 0.0001mm | |
| 273. |
The instrument used to measure blood pressure is called____________? |
| A. | Venturimeter |
| B. | Blood pressure |
| C. | Sphygmomanometer |
| D. | Sonometer |
| Answer» D. Sonometer | |
| 274. |
The highest value of escape velocity in solar system is planet____________________? |
| A. | Earth |
| B. | Neptune |
| C. | Jupiter |
| D. | Moon |
| Answer» D. Moon | |
| 275. |
The graphical representation of Ohms law is___________________? |
| A. | hyperbola |
| B. | ellipse |
| C. | parabola |
| D. | straight line |
| Answer» E. | |
| 276. |
The function of collimeter in spectrometer is________________? |
| A. | to produce parallel beams of light |
| B. | to filter the light rays |
| C. | to make them |
| D. | no function |
| Answer» B. to filter the light rays | |
| 277. |
The frequency of the second pendulum is________________? |
| A. | 1 hertz |
| B. | 0.5 hertz |
| C. | 1.5 hertz |
| D. | 2.5 hertz |
| Answer» C. 1.5 hertz | |
| 278. |
The frequency of a circuit consisting of a capacitance C and a resistor R is________________? |
| A. | C/R |
| B. | R/C |
| C. | 1/RC |
| D. | 1/ 2RC |
| Answer» D. 1/ 2RC | |
| 279. |
The formula of inter-conversion of centigrade and Fahrenheit scale is___________? |
| A. | c-32/9 |
| B. | f -32/9 =c/5 |
| C. | f-32/9=c/9 |
| D. | none |
| Answer» C. f-32/9=c/9 | |
| 280. |
The force responsible for the vibratory motion of the simple pendulum is_________________? |
| A. | mg cosθ |
| B. | mg sinθ |
| C. | mg tonθ |
| D. | mg |
| Answer» C. mg tonθ | |
| 281. |
The force beared by a wall on which water strikes normally at a speed of 10m/sec and at a discharge of 0.0001m3/sec is__________________? |
| A. | 1 N |
| B. | 10 N |
| C. | 100 N |
| D. | none |
| Answer» B. 10 N | |
| 282. |
The flow of ideal fluid is always_______________? |
| A. | Turbulent |
| B. | Streamline |
| C. | Irregular |
| D. | Straight line |
| Answer» C. Irregular | |
| 283. |
The fission chain reaction in a nuclear reactor can be controlled by introducing _______________? |
| A. | Iron rods |
| B. | Graphite rods |
| C. | Cadmium rods |
| D. | Platinum rods |
| Answer» D. Platinum rods | |
| 284. |
The first book of Physics was written by__________? |
| A. | Kelvin |
| B. | Newton |
| C. | Aristotle |
| D. | Faraday |
| Answer» D. Faraday | |
| 285. |
The Fahrenheit and centigrade scales agree to________________? |
| A. | 40 |
| B. | 15.5 |
| C. | 542 |
| D. | 273 |
| Answer» B. 15.5 | |
| 286. |
The existence of Ether wind was experimentally rejected by__________________? |
| A. | equal to its rest mass |
| B. | double of its rest mass |
| C. | infinite |
| D. | zero |
| Answer» D. zero | |
| 287. |
The especially designed semiconductor diodes used as indicator lamps in electronic circuits are___________? |
| A. | The switch |
| B. | The light emitting diode |
| C. | The photo diodes |
| D. | Solar cells. |
| Answer» C. The photo diodes | |
| 288. |
The escape velocity of a body in gravitational field of earth is independent of__________________? |
| A. | its mass |
| B. | the angle at which it is thrown |
| C. | both its mass and the angle at which it is thrown |
| D. | gravitational field of earth |
| Answer» D. gravitational field of earth | |
| 289. |
The escape velocity form the earth surface in km S-1 is____________________? |
| A. | 4.2 km S-1 |
| B. | 7.5 km S-1 |
| C. | 9.5 km S-1 |
| D. | 1.1 km S-1 |
| Answer» E. | |
| 290. |
The error in measurement may occur due to_________________? |
| A. | The inexperience of a person |
| B. | The faulty apprentice |
| C. | Inappropriate method |
| D. | Due to all reasons in A, B and C |
| Answer» E. | |
| 291. |
The equation of continuity is obtained by applying in the law of conservation of_____________? |
| A. | Mass |
| B. | Energy |
| C. | Momentum |
| D. | All |
| Answer» B. Energy | |
| 292. |
The equation θ = 1.22 λ/D was devised by_______________? |
| A. | Newton |
| B. | Einstein |
| C. | Raleigh |
| D. | Planks |
| Answer» D. Planks | |
| 293. |
The energy radiated is directly proportional to the fourth power of Kelvins temperature is________________? |
| A. | Karl-Weins law |
| B. | Rayleigh-Jeans law |
| C. | Stephens law |
| D. | Plancks |
| Answer» D. Plancks | |
| 294. |
The energy of SHM is maximum at_______________? |
| A. | Mean position |
| B. | Extreme position |
| C. | In between mean and extreme |
| D. | All positions during SHM |
| Answer» E. | |
| 295. |
The energy liberated when one atom of U-235 undergoes fission reaction is________________? |
| A. | 200MeV |
| B. | 40MeV |
| C. | 30MeV |
| D. | 20MeV |
| Answer» B. 40MeV | |
| 296. |
The energy band occupied by the valence electrons is called___________________? |
| A. | Energy state |
| B. | Valence band |
| C. | ve energy state |
| D. | conduction band |
| Answer» C. ve energy state | |
| 297. |
The energy absorbed by a body is __________________ at resonance? |
| A. | Maximum as well minimum |
| B. | Minimum only |
| C. | Maximum only |
| D. | 0 |
| Answer» D. 0 | |
| 298. |
The electrons in conduction band are free to___________________? |
| A. | Transport vibrations |
| B. | Transport signals |
| C. | Transport charge |
| D. | Transport impulses |
| Answer» D. Transport impulses | |
| 299. |
The electronic circuits which implement the various logic operations are called_____________? |
| A. | Logic gates |
| B. | Boolean algebra |
| C. | Amplifier gain |
| D. | Logic functions |
| Answer» B. Boolean algebra | |
| 300. |
The electric P.E of an electron in an orbit at a distance rn from the positive charge_____________? |
| A. | Ke2/rn |
| B. | Ke2/rn2 |
| C. | ÀKe2/rn |
| D. | ÀKe2/rn2 |
| Answer» D. ÀKe2/rn2 | |