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MCQOPTIONS
This section includes 488 Mcqs, each offering curated multiple-choice questions to sharpen your Uncategorized topics knowledge and support exam preparation. Choose a topic below to get started.
| 351. |
As the object gains speed, it's G.P.E (Gravitational Potential Energy) |
| A. | increases |
| B. | remains constant |
| C. | decreases |
| D. | varies depending on altitude |
| Answer» E. | |
| 352. |
Total capacitance of 300 mF capacitor and a 600 mF in series is |
| A. | 300 mF |
| B. | 500 mF |
| C. | 200 mF |
| D. | 1000 mF |
| Answer» D. 1000 mF | |
| 353. |
For protons, the gyromagnetic ratio has the value {{}} |
| A. | 3 108rads-1 T-1 |
| B. | 2.68 108rads-1 T-1 |
| C. | 4 108rads-1 T-1 |
| D. | 5 108rads-1 T-1 |
| Answer» C. 4 108rads-1 T-1 | |
| 354. |
insulator which is placed between 2 plates of capacitor is |
| A. | electric |
| B. | dielectric |
| C. | inductor |
| D. | resistor |
| Answer» C. inductor | |
| 355. |
Graph of p against 1 V is |
| A. | curve |
| B. | straight line |
| C. | parabola |
| D. | hyperbola |
| Answer» C. parabola | |
| 356. |
Potential energy of system is maximum at |
| A. | extreme position |
| B. | mean position |
| C. | in between extreme and mean position |
| D. | moderate position |
| Answer» B. mean position | |
| 357. |
If force of 1 N moves an object through 1 m, then work done is |
| A. | 2 J |
| B. | 1 J |
| C. | 3 J |
| D. | 4 J |
| Answer» C. 3 J | |
| 358. |
Activity of one decay per second is equal to |
| A. | 1 Bq |
| B. | 1 atm |
| C. | 1 mol |
| D. | 1 Cd |
| Answer» B. 1 atm | |
| 359. |
Threshold voltage at which LED emits light is |
| A. | less than 0.6 |
| B. | equal to 0.6 |
| C. | more than 0.6 |
| D. | more than 3 |
| Answer» D. more than 3 | |
| 360. |
In + decay, an UP quark becomes |
| A. | a strange quark |
| B. | a simple quark |
| C. | a down quark |
| D. | an anti-quark |
| Answer» D. an anti-quark | |
| 361. |
If we have a positive and a negative charge, then force between them is |
| A. | positive |
| B. | negative |
| C. | zero |
| D. | infinite |
| Answer» C. zero | |
| 362. |
At higher energy, the bodies have |
| A. | small mass |
| B. | large mass |
| C. | zero mass |
| D. | smaller weight |
| Answer» C. zero mass | |
| 363. |
In + decay, the nucleon number is |
| A. | conserved |
| B. | not conserved |
| C. | unstable |
| D. | stable |
| Answer» B. not conserved | |
| 364. |
In cells, internal resistance is due to |
| A. | components inside |
| B. | chemicals within |
| C. | lead blocks |
| D. | graphite |
| Answer» C. lead blocks | |
| 365. |
Dimensions of strain are {{}} |
| A. | [L] |
| B. | [M] [L]-1[T]-2 |
| C. | [L]-1 |
| D. | It's a dimensionless quantity |
| Answer» E. | |
| 366. |
As distance increases, value of gravitational field strength |
| A. | also increases |
| B. | decreases |
| C. | remains constant |
| D. | may increase or decrease |
| Answer» C. remains constant | |
| 367. |
instrument which transfers energy to electric charges in a circuit is |
| A. | battery |
| B. | voltmeter |
| C. | ammeter |
| D. | galvanometer |
| Answer» B. voltmeter | |
| 368. |
The nucleon number consists of |
| A. | Number of electrons |
| B. | Number of protons |
| C. | Number of electrons and protons |
| D. | Number of protons and neutrons |
| Answer» E. | |
| 369. |
capacitance and charge on plates are |
| A. | inversely related |
| B. | directly related |
| C. | not related at all |
| D. | always equal |
| Answer» C. not related at all | |
| 370. |
If energy is released from a system, it's mass |
| A. | decreases |
| B. | increases |
| C. | constant |
| D. | zero |
| Answer» B. increases | |
| 371. |
If charge is placed at infinity, it's potential is |
| A. | zero |
| B. | infinite |
| C. | 1 |
| D. | -1 |
| Answer» B. infinite | |
| 372. |
Graph of potential energy against distance is |
| A. | curve |
| B. | parabolic |
| C. | hyperbolic |
| D. | straight line |
| Answer» E. | |
| 373. |
If the swing moves from right to left, then velocity is |
| A. | negative |
| B. | positive |
| C. | constant |
| D. | zero |
| Answer» B. positive | |
| 374. |
Average force acting on 900 kg car if it's velocity ranges from 5 m s -1 to 30 m s -1 in 12 s is {{}} |
| A. | 1875 N |
| B. | 2000 N |
| C. | 3000 N |
| D. | 1560 N |
| Answer» B. 2000 N | |
| 375. |
-radiations are simply {{}} |
| A. | protons |
| B. | neutrons |
| C. | electrons |
| D. | muons |
| Answer» D. muons | |
| 376. |
Radioactive decay is a |
| A. | random process |
| B. | non-spontaneous process |
| C. | regular process |
| D. | massive process |
| Answer» B. non-spontaneous process | |
| 377. |
Substances that elongate considerably and undergo plastic deformation before they break are known as |
| A. | brittle substances |
| B. | breakable substances |
| C. | ductile substances |
| D. | elastic substances |
| Answer» D. elastic substances | |
| 378. |
As compared to proton, mass of neutron is |
| A. | 10% greater |
| B. | 5% greater |
| C. | 1% greater |
| D. | 0.1% greater |
| Answer» E. | |
| 379. |
In the best piezo-electric substances, the maximum value of strain is about |
| A. | 0.5 % |
| B. | 0.4 % |
| C. | 0.3 % |
| D. | 0.1 % |
| Answer» E. | |
| 380. |
When distance from center is doubled then electric field strength will |
| A. | decrease by the factor of four |
| B. | increase by factor of four |
| C. | will be same |
| D. | decrease by factor of two |
| Answer» B. increase by factor of four | |
| 381. |
All substances have minimum internal energy at |
| A. | absolute zero |
| B. | 0 C |
| C. | 0 F |
| D. | 100K |
| Answer» B. 0 C | |
| 382. |
In gamma emission, the change in nucleon number is |
| A. | zero |
| B. | definite |
| C. | increase by 1 |
| D. | decreases by 1 |
| Answer» B. definite | |
| 383. |
Data in compact disc is stored in form of |
| A. | analogue signal |
| B. | digital signal |
| C. | noise |
| D. | colors |
| Answer» C. noise | |
| 384. |
Rate of flow of electric charge is |
| A. | electric current |
| B. | conventional current only |
| C. | electronic current only |
| D. | potential difference |
| Answer» B. conventional current only | |
| 385. |
LED starts to conduct when voltage is about |
| A. | 1 V |
| B. | 4 V |
| C. | 3 V |
| D. | 2 V |
| Answer» E. | |
| 386. |
Process by which energy is released in sun is |
| A. | fission |
| B. | Haber's process |
| C. | fusion |
| D. | radioactivity |
| Answer» D. radioactivity | |
| 387. |
Quantity R/NA defines |
| A. | Plank's constant |
| B. | Boltzmann constant |
| C. | gravitational constant |
| D. | Avagadro's constant |
| Answer» C. gravitational constant | |
| 388. |
If the particles of medium vibrate at right angles to the direction of velocity then wave is |
| A. | longitudinal |
| B. | transverse |
| C. | abrupt |
| D. | sound |
| Answer» C. abrupt | |
| 389. |
Particles like kaons and muons etc, were found out by |
| A. | looking at cosmic rays |
| B. | looking at particles in accelerators |
| C. | looking closely at atom |
| D. | both A and B |
| Answer» E. | |
| 390. |
Forces acting on an object are balanced if resultant force on object is |
| A. | constant |
| B. | zero |
| C. | increasing |
| D. | decreasing |
| Answer» C. increasing | |
| 391. |
In photoelectric effect, electrons should be removed from the |
| A. | inner shells |
| B. | surface |
| C. | from core |
| D. | the nucleus |
| Answer» C. from core | |
| 392. |
A person of mass m kg jumps from a height of h meters, he will land on the ground with a velocity equal to: |
| A. | (2 g h |
| B. | 1/h (2 g |
| C. | 2gh |
| D. | 2 (g h |
| Answer» B. 1/h (2 g | |
| 393. |
Radiations emitted by radioactive substances is |
| A. | alpha |
| B. | beta |
| C. | gamma |
| D. | all of above |
| Answer» E. | |
| 394. |
Ratio of voltages is inverse ratio of the |
| A. | transformer |
| B. | resistor |
| C. | iron core |
| D. | current |
| Answer» E. | |
| 395. |
High voltages lead to |
| A. | less power loss |
| B. | more power loss |
| C. | high current |
| D. | high resistance |
| Answer» B. more power loss | |
| 396. |
Changing magnetic field induces |
| A. | charge |
| B. | current |
| C. | frequency |
| D. | voltage |
| Answer» C. frequency | |
| 397. |
F = BIL can only be used if the magnetic field and electric current are |
| A. | at right angles to each other |
| B. | in same direction |
| C. | anti-parallel to each other |
| D. | anti-perpendicular to each other |
| Answer» B. in same direction | |
| 398. |
Currents that flow in circles inside a disc are known as |
| A. | eddy currents |
| B. | circular currents |
| C. | air currents |
| D. | alternating curents |
| Answer» B. circular currents | |
| 399. |
Steady d.c voltage is also known as |
| A. | square velocity |
| B. | root mean square velocity |
| C. | root velocity |
| D. | velocity |
| Answer» C. root velocity | |
| 400. |
Escape velocity for a particle is about{{}} |
| A. | 5 km s-1 |
| B. | 8 km s-1 |
| C. | 11 km s-1 |
| D. | 14 km s-1 |
| Answer» D. 14 km s-1 | |