500 General Science For Assam Agriculture, PNRD, Assam Police, Assam TET, SSC & Railway Exam (Part-11)

General Science

For Assam Agriculture, PNRD, Assam Police, Assam TET, Forest, DECT, APSC, Railway & SSC Exam (Part-11)

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500 General Science (Part-11)

1➤ (Q) Angular separation between two colours of the spectrum depends upon which thing?

Ans:- Angle of deviation

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2➤ (Q) Total internal reflection of light is possible when light enters from which thing?

Ans:- Water to air

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3➤ (Q) Which is used to remove astigmatism for a human eye?

Ans:- Cylindrical lens

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4➤ (Q) Why does diffusion of light in the atmosphere take place?

Ans:- Due to dust particles

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5➤ (Q) Which phenomena can not be attributed to the refraction of light?

Ans:- Redshift

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6➤ (Q) Total internal reflection can take place when light travels from which thing?

Ans:- Diamond to glass

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7➤ (Q) The refractive index of a given piece of transparent quartz is greatest for which light?

Ans:- Violet light

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8➤ (Q) A virtual image larger than the object can be formed by which mirror?

Ans:- Concave mirror

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9➤ (Q) If there were no atmosphere, what will be the length of the day on the earth?

Ans:- Decrease

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10➤ (Q) The focal length of a convex lens is 50 cm. what is its power?

Ans:- +2 D

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11➤ (Q) For an astronaut in a space ship, how does the sky appear?

Ans:- Black

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12➤ (Q) Which phenomena is used in optical fibres?

Ans:- Total internal reflection

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13➤ (Q) What is the phenomenon of splitting white light into seven colours?

Ans:- Dispersion

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14➤ (Q) Critical angle is minimum when a light ray passes which thing?

Ans:- Glass to air

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15➤ (Q) If the angle between two plane mirrors is 60°; then how many number of image will be formed?

Ans:- 5

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16➤ (Q) In which part of the eye lies the pigment, that decides the colour of the eyes of a person?

Ans:- Choroid

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17➤ (Q) Critical angle of light passing from glass to water is minimum for which colour?

Ans:- Violet colour

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18➤ (Q) To an observer on the lunar surface, during the day time, how will the sky appear?

Ans:- Black

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19➤ (Q) What is the unit of luminous efficiency of an electric bulb?

Ans:- Lumen / watt

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20➤ (Q) Which of light are strongly absorbed by plants?

Ans:- Blue and red

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