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General Science

Description: General Science
Number of Questions: 25
Created by:
Tags: General Knowledge Medical Entrance Physics Branches of Science Letter G Synonyms Letter H Letter E
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When red light falls on green leaf and red flower, they become ____.

  1. green leaf and red flower

  2. red leaf and red flower

  3. black leaf and red flower

  4. leaf and black flower


Correct Option: C

The sky of the earth appears to be blue because of ____.

  1. reflection

  2. scattering

  3. interference

  4. diffraction


Correct Option: B

Colour of red rose in green light becomes ______.

  1. white

  2. black

  3. red

  4. green


Correct Option: B

What is the use of extra yellow head lights of a car?

  1. Yellow light expands less energy.

  2. Yellow light does not make the pedestrian blind.

  3. Yellow light can penetrate the fog so on a foggy day road becomes clear.

  4. To decorate the car.


Correct Option: C

When white light is passed through a glass prism, which of the following colours is refracted the most?

  1. Blue

  2. Red

  3. Orange

  4. Violet


Correct Option: D

For clear vision, the object should be at a minimum distance of ______.

  1. 15 cm

  2. 20 cm

  3. 25 cm

  4. 50 cm


Correct Option: C

When an object is placed between two parallel mirrors, the number of images formed will be ____.

  1. two

  2. eight

  3. thirty two

  4. infinite


Correct Option: D

A person is moving towards a plane mirror with speed of 1m/s. The image will approach the moving person with relative speed of ______.

  1. 0.5 m/s

  2. 1.0 m/s

  3. 2.0 m/s

  4. 3.5 m/s


Correct Option: B

If the focal length of an astronomical telescope increases, its magnifying power will _____.

  1. increase

  2. decrease

  3. remains the same

  4. cannot be predicted


Correct Option: A

Focussing in a camera is carried out by varying ______.

  1. the amount of light

  2. distance of the lens from the screen

  3. distance of the lens from the object

  4. the speed of the shutter


Correct Option: B

Which mirror is used as a shaving mirror?

  1. Plane mirror

  2. Convex mirror

  3. Concave mirror

  4. None of these


Correct Option: B

The ability of the eye to focus on nearby and distant objects is called the power of ____.

  1. accomodation

  2. assimilation

  3. adjustment

  4. none of these


Correct Option: A

Which mirror has a wider field of view?

  1. Concave mirror

  2. Convex mirror

  3. Plane mirror

  4. None of these


Correct Option: B

Human Eye is an example of ______.

  1. lens

  2. fine camera

  3. magnifying lens

  4. none of these


Correct Option: B

The retina of Human eye behaves as ______.

  1. the screen

  2. the film

  3. the objective

  4. none of these


Correct Option: A

One important difference between light and sound is that the former _____.

  1. is a wave motion

  2. can be reflected

  3. can bend round corners

  4. can travel through space


Correct Option: D

The iris ____.

  1. controls the amount of light entering the eye

  2. acts as a photographic film on which images are obtained

  3. helps in the discrimination of colours by the eye

  4. none of these


Correct Option: A

A person who cannot see objects distinctly beyond 2m is ______.

  1. myopic or near sighted

  2. hypermetropic or long sighted

  3. myopic and hyper-metropic both

  4. none of these


Correct Option: A

Moon is seen above the horizon a few minutes before it has actually risen above the horizon because of _______.

  1. reflection of light

  2. refraction of light

  3. scattering of light

  4. total internal reflection


Correct Option: B

Motion of which of the following particles through a metallic wire is called electric current?

  1. Electron

  2. Positron

  3. Neutron

  4. Photon


Correct Option: A

Which type of lens is used for correcting astigmatism?

  1. Concave lens

  2. Convex lens

  3. Plane lens

  4. Cylindrical lens


Correct Option: D

A hypermetropic person may use _____.

  1. a concave lens

  2. a convex lens

  3. a plano convex lens

  4. a plano concave lens


Correct Option: B

If the length and cross sectional area of a conductor are doubled, its resistance will ____.

  1. increase four times

  2. decrease four times

  3. decrease two times

  4. remain unchanged


Correct Option: D

Which of the following options is stored in a storage cell?

  1. Charge

  2. Electric potential

  3. Lead or other metal

  4. Chemical energy


Correct Option: A

Electric current of a 100w, 220v electric bulb is _____.

  1. 2.2 A

  2. 1.1 A

  3. 0.45 A

  4. 0.22 A


Correct Option: C
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