Physics GK · all questions

Light
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Q281

The principle reason why it is better to have two eyes than one is that

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Q282

Rainbow is formed by . . . . . . . . by drops of water.

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Q283

In solar eclipse

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Q284

What is the speed of light in air?

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Q285

Hydroscope is an instrument that shows changes in

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Q286

In which mirror, image formed is virtual, correct and point sized?

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Q287

On a rainy day, small oily films on water show brilliant colours. This is due to

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Q288

With stereotypical symbols, what is the lens formula?

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Q289

Scattering of sunlight occurs due to the presence of

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Q290

Due to atmospheric refraction, sunrise in advanced and sunset is delayed by about

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Q291

The effect of which, light turns on the boundary between two mediums is:

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Q292

Which of the following is not related to heat flow?

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Q293

A lens with power + 2D will have a focal length of . . . . . . . .

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Q294

Blue colour of the sky is due to

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Q295

The correct order of colours in a rainbow is

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Q296

In order to avoid Sunlight, which of the following colour combination for an umbrella is most appropriate?

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Q297

For a person with hypermetropia or farsightedness, the near point, is . . . . . . . . Farther away from the normal near point.

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Q298

Purpose of an optical filter is to

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Q299

The splitting of different colours of light in a prism is

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Q300

The twinkling of stars at night is caused by . . . . . . . .

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