McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Uncategorized topics .
Chapters
| 251. |
Number of satellites in geostationary orbits are |
| A. | 100 |
| B. | 200 |
| C. | 300 |
| D. | 400 |
| Answer» C. 300 | |
| 252. |
Geostationary satellites have lifetime of nearly |
| A. | 20 years |
| B. | 10 years |
| C. | 50 years |
| D. | 60 years |
| Answer» B. 10 years | |
| 253. |
Time taken to complete a revolution around a planet is called |
| A. | orbital period |
| B. | time period |
| C. | frequency |
| D. | wavelength |
| Answer» A. orbital period | |
| 254. |
As distance increases, value of gravitational field strength |
| A. | also increases |
| B. | decreases |
| C. | remains constant |
| D. | may increase or decrease |
| Answer» B. decreases | |
| 255. |
All objects are attracted towards |
| A. | center of Earth |
| B. | sun |
| C. | mars |
| D. | moon |
| Answer» A. center of Earth | |
| 256. |
Satellite around Earth follows a circular path because |
| A. | gravitational force is parallel to velocity |
| B. | gravitational force is anti parallel to velocity |
| C. | gravitational force is perpendicular to velocity |
| D. | gravitational force is anti perpendicular to |
| Answer» C. gravitational force is perpendicular to velocity | |
| 257. |
Each 1 kg mass experiences force of |
| A. | 7 N |
| B. | 9.81 N |
| C. | 20 N |
| D. | 100 N |
| Answer» B. 9.81 N | |
| 258. |
Gravitational potential is always |
| A. | infinite |
| B. | zero |
| C. | positive |
| D. | negative |
| Answer» D. negative | |
| 259. |
The closer satellite is to Earth, its speed should be |
| A. | more fast |
| B. | more slow |
| C. | zero |
| D. | any constant value |
| Answer» A. more fast | |
| 260. |
Normal force exerted per unit area by gas on walls of container is |
| A. | temperature |
| B. | energy |
| C. | pressure |
| D. | friction |
| Answer» C. pressure | |
| 261. |
Surface area of a typical person is about |
| A. | 1 m2 |
| B. | 2 m2 |
| C. | 3 m2 |
| D. | 4 m2 |
| Answer» B. 2 m2 | |
| 262. |
If we double the temperature of an ideal gas, then it's average kinetic energy will be |
| A. | halved |
| B. | triple the original |
| C. | fourth times of original |
| D. | doubled |
| Answer» D. doubled | |
| 263. |
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» C. 11 km s-1 | |
| 264. |
Force exerted on a person by atmosphere is |
| A. | 200 000 N |
| B. | 300 000 N |
| C. | 400 000 N |
| D. | 500 000 N |
| Answer» A. 200 000 N | |
| 265. |
10 mole of carbon contains |
| A. | 6.02 × 10 24 atoms |
| B. | 6.03 × 10 23 atoms |
| C. | 6.02 × 10 23 atoms |
| D. | 6.04 × 10 24 atoms |
| Answer» A. 6.02 × 10 24 atoms | |
| 266. |
Space occupied by gas is |
| A. | area |
| B. | volume |
| C. | space |
| D. | mass |
| Answer» B. volume | |
| 267. |
At absolute zero, volume of gas is equal to |
| A. | 0 m3 |
| B. | 1 m3 |
| C. | 2 m3 |
| D. | 3 m3 |
| Answer» A. 0 m3 | |
| 268. |
Number of moles in 1.6 kg of oxygen is |
| A. | 30 mol |
| B. | 50 mol |
| C. | 40 mol |
| D. | 60 mol |
| Answer» B. 50 mol | |
| 269. |
Quantity R/NA defines |
| A. | Plank's constant |
| B. | Boltzmann constant |
| C. | gravitational constant |
| D. | Avagadro's constant |
| Answer» B. Boltzmann constant | |
| 270. |
Molar gas constant has value {{}} |
| A. | 7 J mol -1 K-1 |
| B. | 8 J mol -1 K-1 |
| C. | 8.31 J mol -1 K-1 |
| D. | 5 J mol -1 K-1 |
| Answer» C. 8.31 J mol -1 K-1 | |
| 271. |
If average kinetic energy of molecules is higher, then temperature of gas is |
| A. | high |
| B. | low |
| C. | zero |
| D. | infinite |
| Answer» A. high | |
| 272. |
The ideal gas equation is |
| A. | PV = constant |
| B. | PT = constant |
| C. | V⁄T |
| D. | PV = nRT |
| Answer» D. PV = nRT | |
| 273. |
Graph of p against 1⁄V is |
| A. | curve |
| B. | straight line |
| C. | parabola |
| D. | hyperbola |
| Answer» B. straight line | |
| 274. |
Gases deviate from gas laws at |
| A. | high temperature only |
| B. | low pressure only |
| C. | high pressure and low temperature |
| D. | low temperature only |
| Answer» C. high pressure and low temperature | |
| 275. |
Law which relates pressure and volume of gas is |
| A. | Charles's law |
| B. | Avogadro's law |
| C. | Boyle's law |
| D. | ideal gas law |
| Answer» C. Boyle's law | |
| 276. |
As compared to the volume occupied by gas, the volume of particles is |
| A. | more |
| B. | infinite |
| C. | negligible |
| D. | less than the volume of gas |
| Answer» C. negligible | |
| 277. |
Pressure of gas depends on the |
| A. | density of gas |
| B. | mean square speed of gas molecules |
| C. | both A and B |
| D. | temperature |
| Answer» C. both A and B | |
| 278. |
At standard pressure and temperature the average speed of molecules is |
| A. | 400 m s -1 |
| B. | 500 m s -1 |
| C. | 600 m s -1 |
| D. | 700 m s -1 |
| Answer» A. 400 m s -1 | |
| 279. |
Speed of sound in water is 1500 m s -1, depth of water when reflected sound waves are detected after 0.40 s is {{}} |
| A. | 700 m |
| B. | 600 km |
| C. | 600 m |
| D. | 750 km |
| Answer» C. 600 m | |
| 280. |
If a snail crawls 12 cm in 60 s then it's average speed in mm s -1 is {{}} |
| A. | 2 mm s -1 |
| B. | 5 mm s -1 |
| C. | 10 mm s -1 |
| D. | 20 mm s -1 |
| Answer» A. 2 mm s -1 | |
| 281. |
Speed of a body in particular direction can be called |
| A. | acceleration |
| B. | displacement |
| C. | velocity |
| D. | distance |
| Answer» C. velocity | |
| 282. |
If distance is increasing uniformly with time, then velocity is |
| A. | increasing |
| B. | decreasing |
| C. | constant |
| D. | zero |
| Answer» C. constant | |
| 283. |
If the slope of a graph is zero and so the displacement, then velocity is |
| A. | increasing |
| B. | decreasing |
| C. | constant |
| D. | zero |
| Answer» D. zero | |
| 284. |
Speed of snail as compared to speed of a car will be in units {{}} |
| A. | cm s-1 |
| B. | m s-1 |
| C. | km s-1 |
| D. | km h-1 |
| Answer» A. cm s-1 | |
| 285. |
{{}} If a river flows from west to east with constant velocity of 1.0 m s -1 and a boat leaves south bank heading towards north with velocity of 2.40 m s -1 , then resultant velocity of boat is |
| A. | 2.6 m s-1 |
| B. | 2.7 m s-1 |
| C. | 2.8 m s-1 |
| D. | 2.9 m s-1 |
| Answer» A. 2.6 m s-1 | |
| 286. |
Two sides of a rectangular table are 0.8 m and 1.2 m, the displacement of spider when it runs a distance of 2.0 m is |
| A. | 1.5 m |
| B. | 1.4 m |
| C. | 1.6 m |
| D. | 1.7 m |
| Answer» B. 1.4 m | |
| 287. |
Distance travelled by a body in time ‘t’ is |
| A. | instantaneous speed |
| B. | average velocity |
| C. | average acceleration |
| D. | instantaneous acceleration |
| Answer» B. average velocity | |
| 288. |
Displacement is a |
| A. | scalar quantity |
| B. | vector quantity |
| C. | base quantity |
| D. | derived quantity |
| Answer» B. vector quantity | |
| 289. |
A car is travelling at 15 m s-1, the distance it will travel in 1 hour is {{}} |
| A. | 54 km |
| B. | 55 km |
| C. | 56 km |
| D. | 57 km |
| Answer» A. 54 km | |
| 290. |
A car travelled south-west for 200 miles depicts |
| A. | distance |
| B. | speed |
| C. | velocity |
| D. | displacement |
| Answer» D. displacement | |
| 291. |
Sum of e.m.f around any loop equals |
| A. | sum of current |
| B. | sum of potential difference |
| C. | sum of resistances |
| D. | sum of charges passing through it per second |
| Answer» B. sum of potential difference | |
| 292. |
Current entering and leaving a point in a circuit should be |
| A. | equal |
| B. | decreasing |
| C. | increasing |
| D. | variable |
| Answer» A. equal | |
| 293. |
Current through each resistor when they are connected in series is |
| A. | different |
| B. | same |
| C. | can be both A and B |
| D. | decreasing |
| Answer» B. same | |
| 294. |
If a billion electrons enter a point in 1 s, then number of electrons leaving that point in 1 s are |
| A. | 2 billion |
| B. | 3 billion |
| C. | 1 billion |
| D. | 10 billion |
| Answer» C. 1 billion | |
| 295. |
Three resistances 20 Ω, 30 Ω and 60 Ω are connected in parallel, their combined resistance is given by |
| A. | 110 Ω |
| B. | 50 Ω |
| C. | 20 Ω |
| D. | 10 Ω |
| Answer» D. 10 Ω | |
| 296. |
Kirchhoff's 2nd law deals with |
| A. | current in circuit |
| B. | voltage in circuit |
| C. | e.m.f in circuit |
| D. | both B and C |
| Answer» D. both B and C | |
| 297. |
Combined resistance of 5 Ω and 10 Ω is equal to |
| A. | 10 Ω |
| B. | 16 Ω |
| C. | 15 Ω |
| D. | 20 Ω |
| Answer» C. 15 Ω | |
| 298. |
Two 10 Ω resistors are connected in parallel, their equivalent resistance is |
| A. | 5 Ω |
| B. | 0.2 Ω |
| C. | 15 Ω |
| D. | 20 Ω |
| Answer» A. 5 Ω | |
| 299. |
Kirchhoff's 2nd law is consequence of law of conservation of |
| A. | energy |
| B. | charge |
| C. | momentum |
| D. | power |
| Answer» A. energy | |
| 300. |
Ammeter should always have a |
| A. | high resistance |
| B. | low resistance |
| C. | low voltage |
| D. | high voltage |
| Answer» B. low resistance | |
Done Studing? Take A Test.
Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.