Physics - Mock Test 51

Question 501

Energy travels from Sun to Earth through?

A) conduction B) convection C) radiation D) modulation

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Question 502

Eclipses occur due to which optical phenomena?

A) Reflection B) Refraction C) Rectilinear propagation D) Diffraction

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Question 503

Which of the following is used in rear view mirror in vehicle?

A) Concave mirror B) Convex mirror C) Convex lenses D) Concave lenses

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Question 504

What will happen if an object is dropped from a height and there is no air resistance?

A) It will fall with a constant speed and acceleration B) Its acceleration will increase C) Both speed and acceleration will increase D) Its speed will increase

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Question 505

If electric resistance is to be decreased, then the number of resistances should be connected in………………?

A) Series B) Parallel C) Mixed arrangement D) Mixed arrangement

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Question 506

If electric resistance is to be decreased, then the number of resistances should be connected in…………?

A) Series B) Parallel C) Mixed arrangement D) None of these

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Question 507

Which of the following is an example of simple harmonic motion?

A) Earth spinning on its axis B) Simple pendulum motion C) Ball bouncing on floor D) Motion of a ceiling fan

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Question 508

The frequency of direct current is _______?

A) Zero B) 50 HZ C) 60 HZ D) 100 HZ

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Question 509

Indicate the correct arrangement for electromagnetic radiation in order of their increasing wavelength?

A) Microwave, infrared, visible. X-rays B) X-rays, visible, infrared, microwave C) Visible, infrared, visible, microwave, X-rays D) X-rays, infrared, visible, microwave .

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Question 510

What are the primary color in VDU?

A) Black, White, Red B) Red, White, Blue C) Red, Black, Blue D) Red, Green, Blue

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