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.
| 1551. |
The bending of light when it passes around a corner or a slit is due to ________ |
| A. | eflection |
| B. | efraction |
| C. | iffraction |
| D. | otal internal reflection |
| Answer» D. otal internal reflection | |
| 1552. |
The blue colour of water in the sea is due to |
| A. | bsorption of other colours except blue by water molecules |
| B. | cattering of blue light by water molecules |
| C. | eflection of blue light by impurities in sea water |
| D. | eflection of blue sky by sea water |
| Answer» B. cattering of blue light by water molecules | |
| 1553. |
A concave lens always forms |
| A. | real image |
| B. | virtual image |
| C. | n image type which depends on object characteristics |
| D. | n image type which depends on lens curvature |
| Answer» C. n image type which depends on object characteristics | |
| 1554. |
Time of exposure required for taking photograph of an object depends upon the |
| A. | rightness of the object |
| B. | kill of photographer |
| C. | roximity of object |
| D. | ize of the object |
| Answer» B. kill of photographer | |
| 1555. |
A star appears twinkling in the sky because of |
| A. | cattering of light by atmosphere |
| B. | eflection of light by atmosphere |
| C. | efraction of light by atmosphere |
| D. | iffraction of light by atmosphere |
| Answer» D. iffraction of light by atmosphere | |
| 1556. |
A pond of water appears less deep due to |
| A. | eflection |
| B. | iffraction |
| C. | efraction |
| D. | olarisation |
| Answer» D. olarisation | |
| 1557. |
The increasing order of the refractive index of certain materials is (left to right) ________ |
| A. | ocksalt, Benzene, Kerosene, Ice |
| B. | ock Salt, Ice, Benzene, Kerosene |
| C. | ce, Kerosene, Benzene, Rock Salt |
| D. | erosene, Ice, Benzene, Rock Salt |
| Answer» D. erosene, Ice, Benzene, Rock Salt | |
| 1558. |
Which of the following is not caused by atmospheric refraction of light ? |
| A. | un appearing red at sunset |
| B. | winkling of stars at night |
| C. | un appearing higher in the sky than it actually is |
| D. | un becoming visible two or three minutes before actual sunrise |
| Answer» D. un becoming visible two or three minutes before actual sunrise | |
| 1559. |
A water tank appears shallower when it is viewed from top due to |
| A. | ectilinear propagation of light |
| B. | eflection |
| C. | otal internal reflection |
| D. | efraction |
| Answer» E. | |
| 1560. |
'Mirage' is an example of |
| A. | efraction of light only |
| B. | otal internal reflection of light only |
| C. | efraction and total internal reflection of light |
| D. | ispersion of light only |
| Answer» D. ispersion of light only | |
| 1561. |
Which of the following colour of light deviates least through the prism? |
| A. | ellow |
| B. | reen |
| C. | iolet |
| D. | ed |
| Answer» E. | |
| 1562. |
What is the reason for twinkling of stars ? |
| A. | ispersion of light |
| B. | otal internal reflection |
| C. | tmospheric reflection |
| D. | tmospheric refraction |
| Answer» E. | |
| 1563. |
Stars in the sky appear to twinkle due to |
| A. | series of refractions |
| B. | series of reflections |
| C. | surface tension phenomenon |
| D. | ultiple diminishing brightness |
| Answer» B. series of reflections | |
| 1564. |
Stars appear twinkling because of ......... of light. |
| A. | eflection |
| B. | cattering |
| C. | mission |
| D. | bsorption |
| Answer» C. mission | |
| 1565. |
The sparkling of a diamond is due to |
| A. | otal internal reflection of light |
| B. | nterference of light |
| C. | olarisation of light |
| D. | efraction of light |
| Answer» B. nterference of light | |
| 1566. |
Which colour of light shows maximum deviation when passed through a prism ? |
| A. | hite |
| B. | ed |
| C. | iolet |
| D. | reen |
| Answer» D. reen | |
| 1567. |
Which of these travels in glass with minimum velocity ? |
| A. | ed light |
| B. | iolet light |
| C. | reen light |
| D. | ellow light |
| Answer» C. reen light | |
| 1568. |
Red is used as an emergency or danger signal as |
| A. | t is a striking colour |
| B. | ts wavelength is the longest |
| C. | t is scattered |
| D. | t has very high energy |
| Answer» C. t is scattered | |
| 1569. |
Which colour has the highest energy? |
| A. | iolet |
| B. | ed |
| C. | lue |
| D. | hite |
| Answer» B. ed | |
| 1570. |
The energy emitted by the Sun is due to |
| A. | hemical reaction |
| B. | uclear fission |
| C. | uclear fusion |
| D. | ll of the above |
| Answer» D. ll of the above | |
| 1571. |
The oldest type of energy known to man is |
| A. | ind power |
| B. | olar power |
| C. | idal energy |
| D. | eothermal energy |
| Answer» E. | |
| 1572. |
The Solar energy produced by |
| A. | usion reaction |
| B. | ission reaction |
| C. | ombustion reaction |
| D. | one |
| Answer» B. ission reaction | |
| 1573. |
The source of the Sun's energy is the process of |
| A. | hotoelectric emission |
| B. | uclear fission |
| C. | uclear fusion |
| D. | hermionic emission |
| Answer» D. hermionic emission | |
| 1574. |
Which of the following is a non renewable source of energy ? |
| A. | iogas |
| B. | olar |
| C. | ind |
| D. | oal |
| Answer» E. | |
| 1575. |
Which of the following is the second largest source of global energy? |
| A. | ossil fuel |
| B. | uclear Energy |
| C. | enewable Energy |
| D. | one of these |
| Answer» D. one of these | |
| 1576. |
When light passes from one medium to another, this phenomenon of change in its direction is called ________ |
| A. | efraction |
| B. | iffraction |
| C. | ropagation |
| D. | o option is correct |
| Answer» B. iffraction | |
| 1577. |
The reason for a swimming pool to appear less deep than the actual depth is |
| A. | efraction |
| B. | ight scattering |
| C. | eflection |
| D. | nterference |
| Answer» B. ight scattering | |
| 1578. |
The plastic material commonly used for making gear wheels is |
| A. | olyesters |
| B. | ylons |
| C. | akelit |
| D. | olystyrene |
| Answer» C. akelit | |
| 1579. |
Energy that is produced commercially from coal is called |
| A. | ight energy |
| B. | inetic energy |
| C. | hermal energy |
| D. | otential energy |
| Answer» D. otential energy | |
| 1580. |
Hydro-electric power is a: |
| A. | on-renewable natural resource |
| B. | mixture of renewable and non-renewable natural resource |
| C. | either renewable nor non renewable resource |
| D. | enewable natural resource |
| Answer» E. | |
| 1581. |
Electrostatic precipitator is used to control the pollution of |
| A. | ir |
| B. | ater |
| C. | oise |
| D. | hermal |
| Answer» B. ater | |
| 1582. |
Light travels at the fastest speed in: |
| A. | lass |
| B. | ater |
| C. | ydrogen |
| D. | acuum |
| Answer» E. | |
| 1583. |
RADAR is used for: |
| A. | ocating submerged submarines. |
| B. | eceiving a signals in a radio receiver. |
| C. | ocating geostationary satellites. |
| D. | etecting and locating the position of objects such as Aeroplanes. |
| Answer» E. | |
| 1584. |
Point A is at a lower electrical potentialthan point B. An electron between them on the line joining them will |
| A. | ove towards A |
| B. | ove towards B |
| C. | ove at right angles to the line joining A and B |
| D. | emain at rest |
| Answer» C. ove at right angles to the line joining A and B | |
| 1585. |
Metals are good conductors of electricity because: |
| A. | hey contain free electrons. |
| B. | he atoms are lightly packed. |
| C. | hey have high melting point. |
| D. | ll of the above. |
| Answer» B. he atoms are lightly packed. | |
| 1586. |
Out of the following, which is not emitted byradioactive substance? |
| A. | lectrons |
| B. | lectromagnetic radiations |
| C. | lpha particles |
| D. | eutrons |
| Answer» E. | |
| 1587. |
Rectifiers are used to convert: |
| A. | irect current to Alternating current |
| B. | lternating current to Direct current |
| C. | igh voltage to low voltage |
| D. | ow voltage to high voltage |
| Answer» C. igh voltage to low voltage | |
| 1588. |
Mirage is due to: |
| A. | nequal heating of different parts of the atmosphere |
| B. | agnetic disturbances in the atmosphere |
| C. | epletion of ozone layer in the atmosphere |
| D. | qual heating of different parts of the atmosphere |
| Answer» B. agnetic disturbances in the atmosphere | |
| 1589. |
Opticalfibre works on the |
| A. | rinciple of refraction |
| B. | otal internal reflection |
| C. | cattering |
| D. | nterference |
| Answer» C. cattering | |
| 1590. |
Siphon will fail to work if: |
| A. | he densities of the liquid in the two vessels are equal. |
| B. | he level of the liquid in the two vessels are at the same height. |
| C. | oth its limbs are of unequal length. |
| D. | he temperature of the liquids in the two vessels are the same. |
| Answer» C. oth its limbs are of unequal length. | |
| 1591. |
The absorption of ink by blotting paper involves: |
| A. | iscosity of ink |
| B. | apillary action phenomenon |
| C. | iffusion of ink through the blotting |
| D. | iphon action |
| Answer» C. iffusion of ink through the blotting | |
| 1592. |
Find the acceleration (in m/s2) of a body which accelerates from 15 m/s to 40 m/s in 2 seconds. |
| A. | 12.5 |
| B. | 27.5 |
| C. | 25 |
| D. | 55 |
| Answer» B. 27.5 | |
| 1593. |
A charge of 2 C passes from one point to the other in a circuit. If the potential difference between the two points in 5 V, the amount of work done is: |
| A. | 10 J |
| B. | 0.4 J |
| C. | 2.5 J |
| D. | 5 J |
| Answer» B. 0.4 J | |
| 1594. |
A car starting from rest move with uniform acceleration of 1 ms-2 for 2 minutes. Find the speed acquired by the car. |
| A. | 120 ms1 |
| B. | 120 ms-2 |
| C. | 120 ms-1 |
| D. | 120 ms2 |
| Answer» D. 120 ms2 | |
| 1595. |
Mass of an object is a _____. |
| A. | Physical Quantity |
| B. | Fundamental Quantity |
| C. | Scalar Quantity |
| D. | All options are correct |
| Answer» E. | |
| 1596. |
A ray of light passes from water to glass. It bends ________. |
| A. | Away from the normal and speeds up |
| B. | Away from the normal and slows down |
| C. | Towards the normal and slows down |
| D. | Towards the normal and speeds up |
| Answer» D. Towards the normal and speeds up | |
| 1597. |
Automatic rainfall sensor works on the principle of _______. |
| A. | Total internal reflection |
| B. | Interruption |
| C. | Scatter |
| D. | Refraction |
| Answer» B. Interruption | |
| 1598. |
Motion of a body with constant speed in a circular path is called: |
| A. | Circulatory motion |
| B. | Oscillatory motion |
| C. | Non-uniform circular motion |
| D. | Uniform circular motion |
| Answer» E. | |
| 1599. |
Maxwell is the unit of which one of the following? |
| A. | Magnetic flux |
| B. | Permeability |
| C. | Magnetic susceptibility |
| D. | Intensity of magnetization |
| Answer» B. Permeability | |
| 1600. |
_________ is used to measure the force and velocity of wind. |
| A. | Lactometer |
| B. | Barometer |
| C. | Anemometer |
| D. | Milometer |
| Answer» D. Milometer | |