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.
| 351. |
The beats frequency (sensible) for a human car is _____________________? |
| A. | 42Hz |
| B. | 7 Hz |
| C. | 256Hz |
| D. | 262Hz |
| Answer» C. 256Hz | |
| 352. |
The band theory of solids explains satisfactorily the nature of_________________? |
| A. | Electrical insulators alone |
| B. | Electrical conductors alone |
| C. | Electrical semi conductors alone |
| D. | All of the above |
| Answer» E. | |
| 353. |
The average power and instantaneous power become equal if work is done at __________________? |
| A. | any rate |
| B. | at variable rate |
| C. | at uniform rate |
| D. | at high rate |
| Answer» D. at high rate | |
| 354. |
The average acceleration caused by gravity per second is____________? |
| A. | 22 feet |
| B. | 32 feet |
| C. | 52 feet |
| D. | 42 feet |
| Answer» C. 52 feet | |
| 355. |
The area under the force displacement graph represents__________________? |
| A. | area |
| B. | work done |
| C. | power |
| D. | none of these |
| Answer» C. power | |
| 356. |
The area enclosed by the curve ABCDA for a Carnot heat engine represents the work done by Carnot engine_______________? |
| A. | at any instant |
| B. | averagely |
| C. | during its operation |
| D. | during one cycle |
| Answer» E. | |
| 357. |
The angular speed of seconds hand of a watch in rads-1 is______________? |
| A. | π |
| B. | π/2 |
| C. | π/30 |
| D. | π/180 |
| Answer» D. π/180 | |
| 358. |
The angular speed for daily rotation of the earth in rad S-1 is______________? |
| A. | 7.3 x 10 radians/second |
| B. | 7.3 x 5 radians/second |
| C. | 3.7 x 10 7.3 x 5 radians/second |
| D. | 7.3 x 10-5 radians/second |
| Answer» E. | |
| 359. |
The angular position of cells remains the same for a sample of a crystal. This property is called___________________? |
| A. | Isotropy |
| B. | Cleavage |
| C. | Homogeneity |
| D. | The external symmetry of form |
| Answer» E. | |
| 360. |
The alternating voltage is an example of_______________? |
| A. | A digital waveform |
| B. | An analogue waveform |
| C. | Discrete waveform |
| D. | None at all |
| Answer» C. Discrete waveform | |
| 361. |
The acceleration of a projection on the diameter for a particle moving along a circle is_______________? |
| A. | w2x |
| B. | wx2 |
| C. | w2x |
| D. | wx2 |
| Answer» D. wx2 | |
| 362. |
The acceleration in the rocket at any instant is proportional to the nth power of the velocity of the expelled gases. Where the value of n must be ? |
| A. | -1 |
| B. | 1 |
| C. | 2 |
| D. | -2 |
| Answer» C. 2 | |
| 363. |
Rutherford in his atomic model could not explain behavior of ___________ ? |
| A. | Electrons |
| B. | Protons |
| C. | Neutrons |
| D. | Neutrino |
| Answer» B. Protons | |
| 364. |
Reverse process of photoelectric effect is_______________? |
| A. | pair production |
| B. | Compton effect |
| C. | annihilation of matter |
| D. | X-rays production |
| Answer» E. | |
| 365. |
Rest mass of a photon is________________? |
| A. | infinite |
| B. | zero |
| C. | very small |
| D. | 1.67 x 10-27 kg |
| Answer» C. very small | |
| 366. |
Resistance of an ideal insulator is __________________? |
| A. | infinite |
| B. | zero |
| C. | finite |
| D. | depends upon nature |
| Answer» B. zero | |
| 367. |
Resistance of a wire on increasing its temperature will_________________? |
| A. | increase with rise in temperature |
| B. | decrease with rise in temperature |
| C. | will remain same |
| D. | depends upon altitude of experimentation |
| Answer» B. decrease with rise in temperature | |
| 368. |
Resistance of a super conductor is ______________________? |
| A. | finite |
| B. | infinite |
| C. | zero |
| D. | changes with every conductor |
| Answer» D. changes with every conductor | |
| 369. |
Resistance of a conductor depends upon_________________? |
| A. | nature of conductor |
| B. | dimension of conductor |
| C. | physical state of the conductor |
| D. | all of above |
| Answer» E. | |
| 370. |
Reflecting mirrors in laser is used to______________? |
| A. | Further stimulation |
| B. | Lasing more |
| C. | For producing more energetic lasers |
| D. | All |
| Answer» B. Lasing more | |
| 371. |
Reciprocal of resistivity is called__________________? |
| A. | resistance |
| B. | inductance |
| C. | conductivity |
| D. | flexibility |
| Answer» D. flexibility | |
| 372. |
Ratio of the weight of H-atom to that of an electron is approximately______________? |
| A. | 18.336 |
| B. | 1836 |
| C. | 18360 |
| D. | 183.6 |
| Answer» C. 18360 | |
| 373. |
Random errors can be reduced by_______________? |
| A. | Taking zero correction |
| B. | Comparing the instrument with another more accurate one |
| C. | Taking mean of several measurements |
| D. | All methods explained in A, B and C |
| Answer» D. All methods explained in A, B and C | |
| 374. |
Radioactivity is a ______ (A) Spontaneous activity (B) Chemical property_____________? |
| A. | A & B |
| B. | B & C |
| C. | C & A |
| D. | A B & C |
| Answer» D. A B & C | |
| 375. |
Radioactive materials can be identified by measuring their_______________? |
| A. | Hardness |
| B. | Density |
| C. | Mass |
| D. | Half life |
| Answer» E. | |
| 376. |
Radioactive decay obeys which one of the following law ? |
| A. | N=Noe-λt |
| B. | N=Noeλt |
| C. | N=Noe-λt/2 |
| D. | No=N(1+eλt) |
| Answer» B. N=Noeλt | |
| 377. |
Radiations are used for the treatment of skin of a patient is_______________? |
| A. | Alpha rays |
| B. | Gamma rays |
| C. | Beta rays |
| D. | X-rays |
| Answer» C. Beta rays | |
| 378. |
Radiation with wavelength longer than red lights______________? |
| A. | ultraviolet rays |
| B. | X-rays |
| C. | infra red radiation |
| D. | visible radiation |
| Answer» D. visible radiation | |
| 379. |
Radiation produced from TV picture tube is_____________? |
| A. | B-rays |
| B. | X-rays |
| C. | Far infrared |
| D. | Infrared |
| Answer» C. Far infrared | |
| 380. |
Quality of X-rays depends upon ____________ A-filament current B-accelerating voltage C-material of the target ? |
| A. | A & B |
| B. | B & C |
| C. | A & C |
| D. | A B & C |
| Answer» C. A & C | |
| 381. |
pure resistor circuit the voltage and current are_______________? |
| A. | Lagging each other |
| B. | They are at 90? phase difference |
| C. | They have zero phase difference |
| D. | No phase difference |
| Answer» D. No phase difference | |
| 382. |
Proton electron neutron and a particles have same momentum. Which of them have highest K.E ? |
| A. | Proton |
| B. | electron |
| C. | neutron |
| D. | a-particle |
| Answer» C. neutron | |
| 383. |
Propulsion force of a rocket is____________________? |
| A. | non-conservative force |
| B. | conservative force |
| C. | both A and B |
| D. | none of these |
| Answer» B. conservative force | |
| 384. |
Production of heat due to an electric current flowing through a conductor is given by _________________? |
| A. | Joule effect |
| B. | Joule Thomsons effect |
| C. | Comptons effect |
| D. | Feed back effect |
| Answer» B. Joule Thomsons effect | |
| 385. |
Prefix deca represents_______________? |
| A. | 10 Raised to power 1 |
| B. | 10 Raised to power 2 |
| C. | 10 Raised to power 3 |
| D. | 10 Raised to power -1 |
| Answer» B. 10 Raised to power 2 | |
| 386. |
Physics is one of the branches of___________? |
| A. | Physical sciences |
| B. | Biological sciences |
| C. | Social science |
| D. | Life sciences branch |
| Answer» B. Biological sciences | |
| 387. |
Photon of highest frequency will be absorbed when transition takes place from_____________? |
| A. | 1st to 5th orbit |
| B. | 2nd to 5th orbit |
| C. | 3rd to 5th orbit |
| D. | 4th to 5th orbit |
| Answer» B. 2nd to 5th orbit | |
| 388. |
Photoelectric effect was given by ____________________? |
| A. | Hertz |
| B. | Fresnel |
| C. | Einstein |
| D. | Plank |
| Answer» D. Plank | |
| 389. |
Petrol engine is a________________? |
| A. | C.I engine |
| B. | SI engine |
| C. | IC engine |
| D. | all the above |
| Answer» E. | |
| 390. |
Pair production takes place in the vicinity of a heavy nucleus so that_____________? |
| A. | Net energy is conserved |
| B. | Net charge is conserved |
| C. | Net momentum is conserved |
| D. | All of the above |
| Answer» E. | |
| 391. |
Pair production cannot take place in a vacuum as ________________? |
| A. | Mass is not conserved |
| B. | Energy is not conserved |
| C. | Momentum is not conserved |
| D. | The chargee is not conserved |
| Answer» D. The chargee is not conserved | |
| 392. |
Pair production can take place only with_________________? |
| A. | X-rays |
| B. | Gamma rays |
| C. | UV-rays |
| D. | IR-rays |
| Answer» C. UV-rays | |
| 393. |
Pair production cannot take place in a vacuum as ________ is not conserved ? |
| A. | Energy |
| B. | Charge |
| C. | Mass |
| D. | Momentum |
| Answer» E. | |
| 394. |
p-n junction when reversed biased acts as a_______________? |
| A. | capacitor |
| B. | inductor |
| C. | on switch |
| D. | off switch |
| Answer» E. | |
| 395. |
Optical active crystals rotates the __________________? |
| A. | vibrating plane |
| B. | polarization plane |
| C. | diffraction plane |
| D. | interference plane |
| Answer» C. diffraction plane | |
| 396. |
One torr is equal to_________________? |
| A. | 1.333 Nm-2 |
| B. | .1333 Nm-2 |
| C. | 13.33 Nm-2 |
| D. | 133.3 Nm2 |
| Answer» E. | |
| 397. |
One radian is equal to______________? |
| A. | 67.3° |
| B. | 57.3° |
| C. | 87.3° |
| D. | 60° |
| Answer» C. 87.3° | |
| 398. |
One pico stands for_________________? |
| A. | 10 raised to power -15 |
| B. | 10 raised to power -12 |
| C. | 10 raised to power -9 |
| D. | 10 raised to power -6 |
| Answer» C. 10 raised to power -9 | |
| 399. |
One kilowatt hour is the amount of energy delivered during _______________? |
| A. | one second |
| B. | one day |
| C. | one minute |
| D. | one hour |
| Answer» E. | |
| 400. |
One mega watt hour is equal to_________________? |
| A. | 36 x 106 J |
| B. | 36 x 1012 J |
| C. | 36 x 109 J |
| D. | 36 x 108 J |
| Answer» E. | |