General Science - Physics MCQs

1.

Kalpana-1 was first exclusive satellite built by ISRO in which of the following satellite systems?

   A.) EDUSAT
   B.) METSAT
   C.) GSAT
   D.) INSAT

Answer: Option 'B'

METSAT

2.

Which among the following strictly works on the principle of dipole movement of the water molecules?

   A.) Electric Geyser
   B.) Microwave Oven
   C.) Refrigerator
   D.) Air Conditioner

Answer: Option 'B'

Microwave Oven

3.

Thin lamination is used in a transformer to reduce:

   A.) Corona losses
   B.) Eddy current losses
   C.) Hysteresis losses
   D.) Corona losses

Answer: Option 'B'

Eddy current losses

4.

One Nautical Mile is equivalent to how many meters?

   A.) 1552
   B.) 1652
   C.) 1752
   D.) 1852

Answer: Option 'D'

1852

5.

The television technology in which a new form of light-emitting crystals which can be printed onto flexible plastic sheets to produce a paper-thin display that can be rolled up and carried in a pocket is:

   A.) Slingbox
   B.) Pixel Plus
   C.) SED-TV
   D.) QD-TV

Answer: Option 'D'

QD-TV

6.

The name of Robert Watson-Watt is associated with which among the following inventions?

   A.) Microwaves
   B.) Radar technology
   C.) Steam Engine
   D.) Electric Bulb

Answer: Option 'B'

Radar technology

7.

Which among the following scientists is known for laws of planetary motion?

   A.) Faraday
   B.) Newton
   C.) Kepler
   D.) Galileo

Answer: Option 'C'

Kepler

8.

Which among the following lens is used to correct Presbyopia?

   A.) Convex
   B.) Concave
   C.) Bifocal
   D.) Cylindracal

Answer: Option 'C'

Bifocal
In Presbyopia defect both near and far object are not clearly visible i.e., far point is lesser than infinity and near point greater than 25 cm. This can be removed either by using two separate spectacles one for myopia and other for hypermetropia or by using bifocal lens. It is an old age disease. At old age ciliary muscles lose their elasticity so they can not change the focal length of eye lens effectively and eye losses its power of accommodation

9.

A piece of Ice was tied with a string to a water bucket’s bottom, and the water bucket was filled with water with ice fully submerged in it. What would be the impact on the level of water when the ice melts away completely?

   A.) The level of water will first increase then come to the previous on
   B.) The level of water will go up
   C.) The level of water will go down
   D.) The level of water will remain unchanged

Answer: Option 'C'

The level of water will go down
There are two dimensions of this experiment. One is when Ice floats in water and another is as mentioned in the question. When Ice floats in water, the level of water will remain unchanged when the ice melts away because in this situation, Ice replaced water which is `equal to its weight`. But when the floating ice is taken down in the bottom of the bucket and tied over there with a string, and let melt away, the level of water will come down because now the ice was replacing the water `equal to its volume `and Ice has a lower density of water. So The answer of this question is -The level of water will go down.

10.

Which among the following is studied under ” fulminology”?

   A.) Volcanic Eruptions
   B.) Cloudbursts
   C.) Sudden changes in atmosphere
   D.) Lightning

Answer: Option 'D'

Lightning

11.

Which one of the following types of Laser is used in Laser Printers?

   A.) Gas Laser
   B.) Semiconductor laser
   C.) Excimer Laser
   D.) Dye Laser

Answer: Option 'B'

Semiconductor laser

12.

Which of the following causes the drop of water to be in spherical shape?

   A.) Temperature
   B.) Surface tension
   C.) Viscosity
   D.) Air resistance

Answer: Option 'B'

Surface tension

13.

First Indian Satellite Aryabhatta was launched in which year?

   A.) 1980
   B.) 1970
   C.) 1972
   D.) 1975

Answer: Option 'D'

1975
India’s first satellite Aryabhatta was launched by India on 19 April 1975 from Russian space station using Kosmos-3M launch vehicle. 

14.

Which among the following is a property of Insulator?

   A.) The electrons of the outer orbits are loosely bound to the nucleus , however can not flow through them
   B.) The electrons of the outer orbits are tightly bound to the nucleus and can not flow through them
   C.) The electrons of the outer orbits are loosely bound to the nucleus , and can flow through them
   D.) None of the above

Answer: Option 'B'

The electrons of the outer orbits are tightly bound to the nucleus and can not flow through them

15.

Which among the following component of a fluorescent lamp contributes maximum in making them costly?

   A.) Mercury vapor
   B.) Light-emitting phosphors
   C.) Ballast
   D.) Filament

Answer: Option 'C'

Ballast

16.

Which among the following temperature scale is based upon absolute zero?

   A.) Rankine
   B.) Kelvin
   C.) Celsius
   D.) Fahrenheit

Answer: Option 'B'

Kelvin

17.

Which among the following is true about conduction, convection and radiation mode of transfer of heat?

   A.) A Medium is required for conduction but not required for convection and radiation
   B.) A medium is required for conduction, convection and radiation
   C.) A medium is required for conduction and convection but not required for radiation
   D.) A medium is not required for conduction and convectio, radiation

Answer: Option 'C'

A medium is required for conduction and convection but not required for radiation

18.

VIBGYOR (Violet Indigo Blue Green Yellow Orange Red) are the rainbow colors in which of the following order?

   A.) Increasing Speed
   B.) Increasing wavelength
   C.) Decreasing wavelength
   D.) Increasing polarization

Answer: Option 'B'

Increasing wavelength

19.

Which among the following is a Beyond-visual-range air-to-air missile 

   A.) Nag
   B.) Prithvi
   C.) Astra
   D.) Agni

Answer: Option 'C'

Astra

20.

A 10 Kg block of Iron has which of the following twice in value in comparison to a 5 Kg block of Iron? 
1. Inertia 
2. Mass 
3. Volume 
Select the correct option from the codes given below:

   A.) Only 1 & 2 
   B.) Only 2 
   C.) Only 1 & 3 
   D.) 1, 2 & 3

Answer: Option 'D'

1, 2 & 3


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