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.
| 401. |
One light year is equal to________________? |
| A. | 9.5x1015m |
| B. | 9.5x1015sec |
| C. | 9.5x1015Km |
| D. | 9.5x1015cm |
| Answer» B. 9.5x1015sec | |
| 402. |
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. | |
| 403. |
On the basis of band theory of solids the semiconductors have _____________________? |
| A. | A party filled valence band and totally empty conduction band |
| B. | A completely filled valence band a totally empty conduction band and a very wide forbidden band |
| C. | A completely filled valence band a partially filled conduction band and a narrow forbidden band |
| D. | A partly filled valence band a totally empty conduction band and a wide forbidden band |
| Answer» D. A partly filled valence band a totally empty conduction band and a wide forbidden band | |
| 404. |
On loading the prong of a tuning form with wax its frequency____________________? |
| A. | increases |
| B. | decreases |
| C. | remains unchanged |
| D. | may increase or decrease |
| Answer» C. remains unchanged | |
| 405. |
On a clear day at noon the solar energy reaching the earth is ____________________? |
| A. | 1.44kw/m² |
| B. | 1.4kw/m² |
| C. | 1 kw/m² |
| D. | none |
| Answer» D. none | |
| 406. |
Oil rises up to wick in a lamp because_____________? |
| A. | Oil is very light |
| B. | Oil is volatile |
| C. | Diffusion of oil through the wick |
| D. | Capillary action phenomenon |
| Answer» E. | |
| 407. |
Numerical value of Boltzmanns constant is______________? |
| A. | 1.38×10-31JK-1 |
| B. | 3.18×10-31JK-1 |
| C. | 3.18×10-23JK-1 |
| D. | 1.38×10-23JK-1 |
| Answer» E. | |
| 408. |
Number of significant figures in 0.0173 is_________________? |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 2 |
| Answer» B. 4 | |
| 409. |
Null vector is a vector which has________________? |
| A. | Zero magnitude |
| B. | No specified direction |
| C. | Both A and B are correct |
| D. | Both A and B are not correct |
| Answer» D. Both A and B are not correct | |
| 410. |
Nuclei having the same mass number but different atomic number are____________? |
| A. | Isotopes |
| B. | Isobars |
| C. | Isotones |
| D. | Isomers |
| Answer» C. Isotones | |
| 411. |
Nuclear forces exist between ___________________? |
| A. | Proton-proton |
| B. | Proton-neutron |
| C. | Neutron-neutron |
| D. | All of the above |
| Answer» E. | |
| 412. |
Normal human body temperature 98.6°F corresponds to______________? |
| A. | 37°C |
| B. | 42°C |
| C. | 55°C |
| D. | 410°C |
| Answer» B. 42°C | |
| 413. |
Non-inverting amplifier circuits have____________? |
| A. | A very high input impedance |
| B. | A very low input impedance |
| C. | A low output impedance |
| D. | None of the above |
| Answer» B. A very low input impedance | |
| 414. |
Newton’s Third Law of Motion? |
| A. | every action there is an equal and opposite reaction. |
| B. | attraction or repulsion between two charges |
| C. | volume of a given mass of gas increases or decreases |
| D. | temperature remaining constant, volume of a given mass of a gas varies inversely |
| Answer» B. attraction or repulsion between two charges | |
| 415. |
Newtons laws do not hold good for particles_______________? |
| A. | at rest |
| B. | moving slowly |
| C. | move with high velocity |
| D. | move with velocity comparable to velocity of light |
| Answer» E. | |
| 416. |
Newton estimated the speed of sound _____________________? |
| A. | 281m/sec |
| B. | 333m/sec |
| C. | 340m/sec |
| D. | all of the above |
| Answer» B. 333m/sec | |
| 417. |
Neutron and proton are commonly known as______________? |
| A. | Nucleon |
| B. | Meson |
| C. | Boson |
| D. | Quartz |
| Answer» B. Meson | |
| 418. |
Name the SI unit having the symbol cd? |
| A. | Candela |
| B. | Cm |
| C. | Ampere |
| D. | Second |
| Answer» B. Cm | |
| 419. |
Name the branch of science which deals with the study of sound and sound waves? |
| A. | Aeronautics |
| B. | Acoustics |
| C. | Aerostatics |
| D. | Aetiology |
| Answer» C. Aerostatics | |
| 420. |
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 |
| A. | V = VR+VL+VC |
| B. | V2 = VR2+VL2+VC2 |
| C. | V2 = VR2+(VL-VC)2 |
| D. | V2 = VL2+(VR-VC)2 |
| Answer» D. V2 = VL2+(VR-VC)2 | |
| 421. |
Moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R, the ratio of displacement to the covered path will be_______________? |
| A. | πR |
| B. | 2πR |
| C. | 0 |
| D. | 4πR |
| Answer» D. 4πR | |
| 422. |
Motorcycle safety helmet extends the time of collision hence decreasing the________________? |
| A. | chance of collision |
| B. | force acting |
| C. | velocity |
| D. | impulse |
| Answer» E. | |
| 423. |
Momentum depends upon__________________? |
| A. | force acts on the body |
| B. | mass of the body |
| C. | velocity of the body |
| D. | both mass and velocity of the body |
| Answer» E. | |
| 424. |
ML-1 T-2 is the dimension of_______________? |
| A. | Force |
| B. | Pressure |
| C. | Momentum |
| D. | Energy |
| Answer» C. Momentum | |
| 425. |
Minimum number of communication satellites required to cover the whole earth is______________? |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 5 |
| Answer» C. 2 | |
| 426. |
Minimum current required to produce a deflection of 1 mm on a scale at a distance of 1 meter is__________________? |
| A. | 0.1 A |
| B. | 1:00 AM |
| C. | current sensitivity |
| D. | 1 m A |
| Answer» D. 1 m A | |
| 427. |
Michelson devised the formula to calculate the speed of light_______________? |
| A. | C = 4fd |
| B. | C = 8fd |
| C. | C = 16fd |
| D. | C = 5/2fd |
| Answer» D. C = 5/2fd | |
| 428. |
Michelson calculated the speed of light using the instruments______________? |
| A. | spectrometer |
| B. | galvanometer |
| C. | interferometer |
| D. | none of these |
| Answer» B. galvanometer | |
| 429. |
Metabolism is the name of a process in which energy transformation takes place within______________? |
| A. | Heat engine |
| B. | Human body |
| C. | Atmosphere |
| D. | Laboratory |
| Answer» C. Atmosphere | |
| 430. |
Medium which sends signal from source to destination is known as ________ ? |
| A. | Transmitter |
| B. | Transmission channel |
| C. | Receiver |
| D. | Hardware |
| Answer» C. Receiver | |
| 431. |
Maximum number of rectangular components are_____________? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 432. |
Maximum number of components of a vector may be________________? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | Infinite |
| Answer» E. | |
| 433. |
Maximum frequency in the spectrum from X-ray tube is directly proportional to the______________? |
| A. | Number of incident electron i.e. filament current |
| B. | The kinetic energy of the incident electron i.e. the potential difference through which they are accelerated |
| C. | The soft target which can easily emit electrons |
| D. | All of above are correct |
| Answer» C. The soft target which can easily emit electrons | |
| 434. |
Materials that undergo plastic deformation before breaking are called __________________? |
| A. | Brittle |
| B. | Ductile |
| C. | Amorphous |
| D. | Polymers |
| Answer» C. Amorphous | |
| 435. |
Materials in which valence electrons are tightly bound to their atoms at low temperature are called___________________? |
| A. | Semi conductor |
| B. | Super conductors |
| C. | Insulators |
| D. | Conductor |
| Answer» D. Conductor | |
| 436. |
Mass of neutron is________________? |
| A. | 1.67 x 10-31 kg |
| B. | 1.67 x 10-27 kg |
| C. | 9.1 x 10-31 kg |
| D. | 1.67 x 10-19 kg |
| Answer» C. 9.1 x 10-31 kg | |
| 437. |
Mass defect per nucleon is ___________________? |
| A. | The binding energy of the nucleus |
| B. | Packing fraction |
| C. | The average energy of the nucleus |
| D. | All of above are one and the same thing |
| Answer» C. The average energy of the nucleus | |
| 438. |
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. | |
| 439. |
Many of the semi conductors are crystals of the type__________________? |
| A. | Face centred cubic |
| B. | Body centred cubic |
| C. | Simple cubic |
| D. | All of the above |
| Answer» B. Body centred cubic | |
| 440. |
Magnifying power of simple microscope______________? |
| A. | increase with increase in focal length |
| B. | increase with decrease in focal length |
| C. | no effect with decrease or increase with focal length |
| D. | list distance of distinct vision |
| Answer» C. no effect with decrease or increase with focal length | |
| 441. |
Magnification of the astronomical telescope is_____________? |
| A. | fo+fe |
| B. | fo/fe |
| C. | fe/fo |
| D. | (1+fo/fe)L/fo |
| Answer» C. fe/fo | |
| 442. |
Magnetic force acting on a unit positive charge moving perpendicular to the magnetic field with a unit velocity is called____________________? |
| A. | magnetic flux |
| B. | magnetic field intensity |
| C. | magnetic induction |
| D. | self inductance |
| Answer» D. self inductance | |
| 443. |
Magnetic flux and flux density are related by___________________? |
| A. | magnetic flux = flux density / area |
| B. | magnetic flux = flux density x area |
| C. | flux density = magnetic flux area |
| D. | flux density = magnetic flux x area |
| Answer» C. flux density = magnetic flux area | |
| 444. |
Mach number is used in connection with the speed of___________? |
| A. | Ship |
| B. | Light |
| C. | Sound |
| D. | aircraft |
| Answer» E. | |
| 445. |
Longitudinal waves do not exhibit _____________________? |
| A. | reflection |
| B. | refraction |
| C. | diffraction |
| D. | polarization |
| Answer» E. | |
| 446. |
Linear momentum of a photon is_______________? |
| A. | zero |
| B. | hv/c2 |
| C. | hv/c |
| D. | c2/hv |
| Answer» B. hv/c2 | |
| 447. |
linear expansion occurs in_________? |
| A. | solid |
| B. | liquid |
| C. | both |
| D. | none |
| Answer» B. liquid | |
| 448. |
Light reaches the earth form sun in nearly____________________? |
| A. | 15 minutes |
| B. | 10 minutes |
| C. | 8 minutes |
| D. | 8 minutes 30 seconds |
| Answer» E. | |
| 449. |
Light on passing through a Polaroid is ___________________? |
| A. | plane polarized |
| B. | un-polarized |
| C. | circularly polarized |
| D. | elliptically polarized |
| Answer» B. un-polarized | |
| 450. |
Least distance of distinct vision_____________? |
| A. | increases with increase in age |
| B. | decreases with increase in age |
| C. | neither increases nor decreases |
| D. | becomes infinite after 60 years |
| Answer» B. decreases with increase in age | |