MCQOPTIONS
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MCQOPTIONS
This section includes 2016 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 1651. |
An electron and a photon have same de Broglie wavelength. It implies that they have the same |
| A. | linear momentum |
| B. | energy |
| C. | speed |
| D. | angular momentum |
| Answer» B. energy | |
| 1652. |
An object with a mass of 30 kg moving with a velocity of 5 m/s. What is the kinetic energy possessed by the object? |
| A. | 375 N |
| B. | 375 kg m/s |
| C. | 375 J |
| D. | 375 Pa |
| Answer» D. 375 Pa | |
| 1653. |
By increasing the intensity of incident light on the surface, the photoelectric current ________. |
| A. | Increases |
| B. | Decreases |
| C. | Unchanged |
| D. | Increases initially and then decreases |
| Answer» E. | |
| 1654. |
Identify the INCORRECT pair from the given option. |
| A. | A running - kinetic energy |
| B. | A stationary stone - kinetic energy |
| C. | A bent bow - potential energy |
| D. | A falling coconut - kinetic energy |
| Answer» C. A bent bow - potential energy | |
| 1655. |
If the velocity of a body is halved its kinetic energy ________. |
| A. | become 4 times |
| B. | becomes 1/4th |
| C. | is also doubled |
| D. | becomes half |
| Answer» C. is also doubled | |
| 1656. |
Myra cycles to a friend’s house 5 km away to deliver a packet. She goes at a speed of 12 km/hour and returns at a speed of 8 km/h. Her average speed during the whole trip is- |
| A. | 20 km/h |
| B. | 9.6 km/h |
| C. | 10 km/h |
| D. | 5 m/s |
| Answer» C. 10 km/h | |
| 1657. |
A 1-kg object falls from a height of 30 m to the ground. The work done by the force of gravity will be _____. (Take g = 10 m/s) |
| A. | 10 J |
| B. | 300 J |
| C. | 30 J |
| D. | 0.33 J |
| Answer» C. 30 J | |
| 1658. |
Due to which force does the moon move around the Earth in its near circular orbit? |
| A. | Mechanical force |
| B. | Centrifugal force |
| C. | Friction force |
| D. | Centripetal force |
| Answer» E. | |
| 1659. |
If the radius of curvature of a convex mirror is 24 cm, what is its focal length? |
| A. | 24 cm |
| B. | 48 cm |
| C. | 14 cm |
| D. | 12 cm |
| Answer» E. | |
| 1660. |
9800 Joules of energy was spent to raise a mass of 80 kg. The mass was raised to a height of______ |
| A. | 10.5 m |
| B. | 15.0 m |
| C. | 12.5 m |
| D. | 22.5 m |
| Answer» D. 22.5 m | |
| 1661. |
How much of 1 gm of Astanine-210 (in gm) will be left in 24 hours if half life of Astanine-210 is 8 hours? |
| A. | 0.125 |
| B. | 0.25 |
| C. | 0.0625 |
| D. | 0.03125 |
| Answer» B. 0.25 | |
| 1662. |
If a convex lens forms a real inverted same size image at 30cm, then the object is placed _____ in front of the lens. |
| A. | 40 cm |
| B. | 30 cm |
| C. | 10 cm |
| D. | 20 cm |
| Answer» C. 10 cm | |
| 1663. |
1no + 235U92 → yBa56 + 93Kr36 + 31no. Find 'y' from the given fission equation of an uranium nucleus? |
| A. | 138 |
| B. | 139 |
| C. | 141 |
| D. | 140 |
| Answer» E. | |
| 1664. |
A Barometer kept in an elevator reads 760 mm when the elevator is at rest. When the elevator moves in the upward direction with increasing speed, the reading of the Barometer will be: |
| A. | 760 mm |
| B. | < 760 mm |
| C. | > 760 mm |
| D. | Zero |
| Answer» C. > 760 mm | |
| 1665. |
A device which converts electrical energy into mechanical energy is: |
| A. | Electric generator |
| B. | Electric transformer |
| C. | Electric conductor |
| D. | Electric motor |
| Answer» E. | |
| 1666. |
If no force is applied to a moving object, then it will stop due to _________. |
| A. | Tension |
| B. | Momentum |
| C. | Impulse |
| D. | Friction |
| Answer» E. | |
| 1667. |
1 kWh = ? |
| A. | 360000 J |
| B. | 3600 J |
| C. | 36000 J |
| D. | 3600000 J |
| Answer» E. | |
| 1668. |
Radioactivity is measured by |
| A. | GM Counter |
| B. | Polarimeter |
| C. | Calorimeter |
| D. | Colorimeter |
| Answer» B. Polarimeter | |
| 1669. |
Among the colours of a rainbow, which one has the longest wavelength ? |
| A. | Red |
| B. | Orange |
| C. | Green |
| D. | Yellow |
| Answer» B. Orange | |
| 1670. |
Light waves are ______. |
| A. | electric waves |
| B. | magnetic waves |
| C. | electromagnetic waves |
| D. | No option is correct. |
| Answer» D. No option is correct. | |
| 1671. |
An echo is heard after 5 seconds of the production of sound which moves with a speed of 340 m/s. What is the distance of the mountain from the source of sound which produced the echo? |
| A. | 0.085 km |
| B. | 0.85 km |
| C. | 0.17 km |
| D. | 1.7 km |
| Answer» C. 0.17 km | |
| 1672. |
Calculate the pressure (in Pa) if a thrust of 600 N is applied to an area of 24 m2. |
| A. | 144 |
| B. | 50 |
| C. | 25 |
| D. | 72 |
| Answer» D. 72 | |
| 1673. |
In an image formed by a mirror, the left of the object appears on the right and the right appears on the left. This is called as: |
| A. | Lateral inversion |
| B. | Regular reflection |
| C. | Multiple reflection |
| D. | Irregular reflection |
| Answer» B. Regular reflection | |
| 1674. |
In Alternating Current, which of the following devices is used to easily and efficiently convert voltages from one voltage to another ? |
| A. | Transformer |
| B. | Resistor |
| C. | Inverter |
| D. | Rectifier |
| Answer» B. Resistor | |
| 1675. |
Radioisotopes are radioactive isotopes of an element and are elaborately used in medicines, industry and scientific research. Match the following radioisotopes (List I) with their applications (List II):List I (Radioisotope)List II (Application)A. Cobalt-60I. Geological DatingB. Potassium-40II. Cancer TherapyC. Iodine-131III. Leukemia TherapyD. Phosphorus-32IV. Thyroid TherapyE. Carbon-14V. Archaeological DatingSelect the code for the correct answer from the options given below: |
| A. | A - I, B - III, C - II, D - IV, E - V |
| B. | A - II, B - I, C - IV, D - III, E - V |
| C. | A - I, B - II, C - III, D - IV, E - V |
| D. | A - II, B - I, C - III, D - IV, E - V |
| Answer» C. A - I, B - II, C - III, D - IV, E - V | |
| 1676. |
Calculate the time period (in seconds) of a sound wave of wavelength 3 m traveling with a speed of 300 m/s. |
| A. | 900 |
| B. | 0.02 |
| C. | 450 |
| D. | 0.01 |
| Answer» E. | |
| 1677. |
A curved mirror where the reflecting surface is curved inwards is called a ________. |
| A. | Concave mirror |
| B. | Plano-convex mirror |
| C. | Plane mirror |
| D. | Convex mirror |
| Answer» B. Plano-convex mirror | |
| 1678. |
If a young son works quickly for 2 hours and prepares 16 items in a day, and his old father works slowly for 8 hours and prepares 24 items a day, which of the following is true. |
| A. | The son has more energy |
| B. | The son has more power |
| C. | Both have equal energy |
| D. | Both have same power |
| Answer» C. Both have equal energy | |
| 1679. |
Hydraulic machines work under the Principle of |
| A. | Newton's Law |
| B. | Joules Law |
| C. | Pascal's Law |
| D. | Floatation Law |
| Answer» D. Floatation Law | |
| 1680. |
In which of the following silicon is not used? |
| A. | Solar Panels |
| B. | IC manufacturing |
| C. | Optical glass |
| D. | Ink Pen |
| Answer» E. | |
| 1681. |
Among the following types of glasses, which one is used for making optical instruments? |
| A. | Pyrex glass |
| B. | Soft glass |
| C. | Hard glass |
| D. | Flint glass |
| Answer» E. | |
| 1682. |
Identify the word that means 'The natural tendency of objects to resist change in their state of rest or of uniform motion'. |
| A. | Inertia |
| B. | Momentum |
| C. | Force |
| D. | Work |
| Answer» B. Momentum | |
| 1683. |
Air pressure is measured by |
| A. | Thermometer |
| B. | Hydrometer |
| C. | Barometer |
| D. | Hygrometer |
| Answer» D. Hygrometer | |
| 1684. |
Energy derived from the internal heat of the Earth is called ________ energy. |
| A. | Potential |
| B. | Solar |
| C. | Kinetic |
| D. | Geothermal |
| Answer» E. | |
| 1685. |
Household refrigerators work on the principle: |
| A. | Peltier effect |
| B. | Seebeck effect |
| C. | Joule Thomson effect |
| D. | Photo electric effect |
| Answer» D. Photo electric effect | |
| 1686. |
An Isotope without any Neutron is |
| A. | Trituim |
| B. | Deuterium |
| C. | Protium |
| D. | None of these |
| Answer» D. None of these | |
| 1687. |
A beta particle is same as _______. |
| A. | an electron |
| B. | a proton |
| C. | a positron |
| D. | a neutron |
| Answer» B. a proton | |
| 1688. |
2H1 + 2H1 → 3He2 + _______ + 3.27 Mev. Find the missing elements. |
| A. | 1 neutron |
| B. | 1 proton |
| C. | 1 electron |
| D. | 1 positron |
| Answer» B. 1 proton | |
| 1689. |
“Curie” is unit of: |
| A. | Radioactivity |
| B. | Temperature |
| C. | Heat |
| D. | Energy |
| Answer» B. Temperature | |
| 1690. |
A 4.0 kg object is moving horizontally with a speed of 5.0 m/s. To increase its speed to 10 m/s, the amount of work required to be done on this object is: |
| A. | 150 J |
| B. | 50 J |
| C. | 75 J |
| D. | 100 J |
| Answer» B. 50 J | |
| 1691. |
Force x displacement is equal to _______. |
| A. | work |
| B. | energy |
| C. | pressure |
| D. | thrust |
| Answer» B. energy | |
| 1692. |
Calculate the momentum of a gun of mass 400 kg when it recoils with a velocity of 0.25 ms-1. |
| A. | 100 kg.ms2 |
| B. | 100 kg.ms-1 |
| C. | 100 kg.ms-3 |
| D. | 100 kg.ms1 |
| Answer» C. 100 kg.ms-3 | |
| 1693. |
Nucleus of 237Np93 emits an alpha particle to give nucleus of __________. |
| A. | 233U92 |
| B. | 225Ac89 |
| C. | 228Ra88 |
| D. | 233Pa91 |
| Answer» E. | |
| 1694. |
Pick out the scalar quantity from the followings. |
| A. | Force |
| B. | Acceleration |
| C. | Work |
| D. | Velocity |
| Answer» D. Velocity | |
| 1695. |
Light-year is a measurement of: |
| A. | Time in Space |
| B. | Distance in Space |
| C. | Speed of Satellites |
| D. | Speed of Light |
| Answer» C. Speed of Satellites | |
| 1696. |
In which of the following ways can 1 Volt be expressed? |
| A. | 1 Joule-Coulomb per second |
| B. | 1 Joule-Coulomb |
| C. | 1 Coulomb per Joule |
| D. | 1 Joule per Coulomb |
| Answer» E. | |
| 1697. |
If a U-238 nucleus splits into two identical parts, the two nuclei so produced will be |
| A. | radioactive |
| B. | stable |
| C. | Isotope |
| D. | Isobar |
| Answer» C. Isotope | |
| 1698. |
_______________ are made up of quarks. |
| A. | Electrons |
| B. | Positrons |
| C. | Leptons |
| D. | Protons |
| Answer» E. | |
| 1699. |
An Integrated circuit, also referred as IC chip is a set of electronic circuit on a small plate is made of:A. CopperB. SiliconC. SilicaD. Chromium |
| A. | C |
| B. | D |
| C. | A |
| D. | B |
| Answer» E. | |
| 1700. |
Calculate the power (in W) of an engine if it can perform 120 J of work in 3 seconds. |
| A. | 360 |
| B. | 80 |
| C. | 180 |
| D. | 40 |
| Answer» E. | |