MCQOPTIONS
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MCQOPTIONS
This section includes 778 Mcqs, each offering curated multiple-choice questions to sharpen your Physics Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 401. |
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 | |
| 402. |
According to which one of following law the density of atom is uniform ? |
| A. | J.J.Thomson model |
| B. | Rutherfords model |
| C. | Bohrs model |
| D. | All of the above laws contradict the statement |
| Answer» B. Rutherfords model | |
| 403. |
Which one of the following radiations possesses maximum velocity ? |
| A. | α-rays |
| B. | β-rays |
| C. | γ-rays |
| D. | All of above have the same speed |
| Answer» D. All of above have the same speed | |
| 404. |
In the nucleus of uranium, the number of neutrons will be _____________? |
| A. | 92 |
| B. | 235 |
| C. | 143 |
| D. | Different for different isotopes |
| Answer» E. | |
| 405. |
One AMU is equal to__________________? |
| A. | 1.66 x 10-27kg |
| B. | 166 x 10-15ng |
| C. | 166 x 10-20g |
| D. | All of above |
| Answer» E. | |
| 406. |
During fusion of hydrogen into helium________________? |
| A. | Energy is absorbed |
| B. | Energy is released |
| C. | Mass is increased due to energy absorption |
| D. | Mass is reduced due to the energy released |
| Answer» C. Mass is increased due to energy absorption | |
| 407. |
Neutron and proton are commonly known as______________? |
| A. | Nucleon |
| B. | Meson |
| C. | Boson |
| D. | Quartz |
| Answer» B. Meson | |
| 408. |
Average energy required to remove one nucleon from the nucleus is called__________________? |
| A. | Binding energy per nucleon |
| B. | Energy of decay |
| C. | Destruction energy |
| D. | All of above |
| Answer» B. Energy of decay | |
| 409. |
Sum of the masses of constituent nucleons as compared to the mass of the resultant nucleus is______________? |
| A. | Smaller |
| B. | Greater than 82 |
| C. | Same |
| D. | Sometimes smaller some times greater |
| Answer» C. Same | |
| 410. |
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 | |
| 411. |
Various types of cancer are treated by_________________? |
| A. | Cobalt-60 |
| B. | Strontium-90 |
| C. | Carbon-14 |
| D. | Nickel-63 |
| Answer» B. Strontium-90 | |
| 412. |
The charge on an electron was determine by ________________? |
| A. | Ampere |
| B. | Maxwell |
| C. | Millikan |
| D. | Thomson |
| Answer» D. Thomson | |
| 413. |
A cup of milk is placed in a microwave oven. Tell which statements is false. (1) Milk will be heated up only. (2) Cup will remain cool. (3) Both cup and mild will get hot ? |
| A. | None |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» E. | |
| 414. |
The charge on neutron is_______________? |
| A. | Plus 1.6 x 10-19C |
| B. | Zero |
| C. | Minus 1.6 x 10-19C |
| D. | No definite charge |
| Answer» C. Minus 1.6 x 10-19C | |
| 415. |
The path of alpha particle is_______________? |
| A. | Rectilinear |
| B. | Curved |
| C. | Zig-zag or erratic |
| D. | Elliptical |
| Answer» D. Elliptical | |
| 416. |
An alpha particle is emitted from 88Ra226. What is the mass and atomic number of the daughter nucleus ? |
| A. | 224 – 84 |
| B. | 220 – 80 |
| C. | 222 – 86 |
| D. | 226 – 87 |
| Answer» D. 226 – 87 | |
| 417. |
Sterilization of surgical instruments medical supplies and bandages can be done by exposing them to a beam of_______________? |
| A. | α-rays |
| B. | β-rays |
| C. | γ-rays |
| D. | B and C have equal antiseptic propertie |
| Answer» D. B and C have equal antiseptic propertie | |
| 418. |
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 | |
| 419. |
Geiger counter is suitable for _________________? |
| A. | Fast counting |
| B. | Extremely fast counting |
| C. | Slow counting |
| D. | All situations |
| Answer» D. All situations | |
| 420. |
Which of the following radiations are suitable for the treatment of an infection in the interior of the body ? |
| A. | α-rays |
| B. | β-rays |
| C. | γ-rays |
| D. | X-rays |
| Answer» D. X-rays | |
| 421. |
Alpha particle ionizes an atom_________________? |
| A. | Through direct collision |
| B. | Through electrostatic attraction |
| C. | Through electrostatic repulsion |
| D. | All of above |
| Answer» D. All of above | |
| 422. |
The charge on alpha particles is________________? |
| A. | Plus one |
| B. | Plus two |
| C. | Minus two |
| D. | Minus one |
| Answer» C. Minus two | |
| 423. |
The velocity of the mass attached to a spring is maximum at_______________? |
| A. | Mean position |
| B. | Extreme position |
| C. | Both A and B |
| D. | None |
| Answer» B. Extreme position | |
| 424. |
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 | |
| 425. |
Pair production cannot take place in a vacuum as ________ is not conserved ? |
| A. | Energy |
| B. | Charge |
| C. | Mass |
| D. | Momentum |
| Answer» E. | |
| 426. |
An alpha particle can produce fluorescence in__________________? |
| A. | ZnS |
| B. | Barium platinocyanide |
| C. | Calcium tungstate |
| D. | All of above |
| Answer» E. | |
| 427. |
In case of a simple pendulum, the cause of damping is__________________? |
| A. | Drag force of air |
| B. | Gravity |
| C. | Tension in the string |
| D. | None of these |
| Answer» B. Gravity | |
| 428. |
Alpha particles possess greater penetration power than that of beta particles due to its_____________? |
| A. | Smaller ionization power |
| B. | Greater ionization power |
| C. | Neither greater nor smaller ionization power |
| D. | Same ionization power |
| Answer» B. Greater ionization power | |
| 429. |
0.001 kg mass will be equivalent to_________________? |
| A. | 2.50 GWh |
| B. | 25.00 GWh |
| C. | 0.26 GWh |
| D. | 250 GWh |
| Answer» C. 0.26 GWh | |
| 430. |
Pair production can take place only with_________________? |
| A. | X-rays |
| B. | Gamma rays |
| C. | UV-rays |
| D. | IR-rays |
| Answer» C. UV-rays | |
| 431. |
The projection of the particle moving in a circle with non-uniform speed executes ? |
| A. | S.H.M |
| B. | Vibratory motion |
| C. | Both B and D |
| D. | None S.H.M |
| Answer» D. None S.H.M | |
| 432. |
An observer shoots parallel to a meter stick at very high (relativistic) speed and finds that the length of meter stick is________________? |
| A. | greater than one meter |
| B. | less than one meter |
| C. | one meter |
| D. | a foolish question |
| Answer» C. one meter | |
| 433. |
Mark the wrong statement ? |
| A. | a frame of reference which is either at rest or moves with a constant velocity is called an inertial frame of reference |
| B. | an un-accelerated frame of reference is called an inertial frame of reference |
| C. | all the frames of reference in uniform rectilinear motion are equivalent |
| D. | Newtons laws of motion are valid in an accelerated (non inertial) frame of reference |
| Answer» E. | |
| 434. |
Linear momentum of a photon is_______________? |
| A. | zero |
| B. | hv/c2 |
| C. | hv/c |
| D. | c2/hv |
| Answer» B. hv/c2 | |
| 435. |
For a simple pendulu,m the restoring force is caused by________________? |
| A. | Gravity |
| B. | Spring |
| C. | Hand |
| D. | All of these |
| Answer» B. Spring | |
| 436. |
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 | |
| 437. |
Which one is not a branch of physical sciences ? |
| A. | Chemistry |
| B. | Astronomy |
| C. | Geology |
| D. | Biology |
| Answer» E. | |
| 438. |
Displacement of the body in S.H.M is equal to amplitude when the body is at_______________? |
| A. | Mean position |
| B. | Elsewhere |
| C. | Extreme position |
| D. | None |
| Answer» D. None | |
| 439. |
The uncertainty in a measurement may occur due to_______________? |
| A. | Limitation of an instrument |
| B. | Natural variation of the object to be measured |
| C. | Inadequate technique |
| D. | All given in A, B and C |
| Answer» E. | |
| 440. |
Stopping potential for a metal surface in case of photoelectric emission depends on_____________? |
| A. | the threshold frequency for the metal surface |
| B. | the intensity of incident light |
| C. | the frequency of incident light and work function of the metal surface |
| D. | all of the above |
| Answer» D. all of the above | |
| 441. |
The distance covered by a body in one complete vibration is 20cm. What is the amplitude of body ___________________? |
| A. | 10 cm |
| B. | 5 cm |
| C. | 15 cm |
| D. | 7.5 cm |
| Answer» C. 15 cm | |
| 442. |
In any measurement the significant figures are______________? |
| A. | All accurately known and all doubtful digits |
| B. | Only accurately known digits |
| C. | Only doubtful digits |
| D. | All accurately known digits and the first doubtful digit |
| Answer» E. | |
| 443. |
How many types of units are in SI ? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 444. |
In S.H.M. the velocity of a particle is maximum at________________? |
| A. | mean position |
| B. | extreme position |
| C. | middle between the mean and extreme position on the right side |
| D. | middle between the mean and extreme position on the left side |
| Answer» B. extreme position | |
| 445. |
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. | |
| 446. |
The critical speed of an artificial satellite is_______________? |
| A. | 8 Kms-1 |
| B. | 8.1 Kms-1 |
| C. | 7.9 Kms-1 |
| D. | 8 ms-1 |
| Answer» D. 8 ms-1 | |
| 447. |
The phase of SHM describes________________? |
| A. | Displacement only |
| B. | The direction of motion only |
| C. | Both displacement and direction of motion |
| D. | Neither displacement nor direction of motion |
| Answer» D. Neither displacement nor direction of motion | |
| 448. |
The sharpness of resonance is__________________? |
| A. | Directly proportional to the damping force |
| B. | Inversely proportional to the damping force |
| C. | Equal to the square of damping force |
| D. | Equal to the square of damping force |
| Answer» C. Equal to the square of damping force | |
| 449. |
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 | |
| 450. |
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. | |