set 9 MCQ Questions & Answers Detailed Explanation

MOST IMPORTANT general science mcq - 16 EXERCISES

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The following question based on light, heat, thermodynamics, wave motion, sound, optics & oscillations topic of general science mcq

Questions : For the myopic eye, the defect is cured by

(a) Cylindrical lens

(b) Concave lens

(c) Convex lens

(d) Toric lens

The correct answers to the above question in:

Answer: (b)

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Read more light heat thermodynamics wave sound optics oscillation Based General Science Questions and Answers

Question : 1

A thunder clap is heard 5.5 second after the lightening flash. The distance of the flash is (velocity of sound in air = 330 m/s)

a) 300 m

b) 1780 m

c) 1815 m

d) 3560 m

Answer: (c)

Question : 2

A mirage occurs because

a) the hot ground acts like a mirror

b) the refractive index of atmosphere increases with height

c) the refractive index of atmosphere decreases with height

d) refractive index remains constant with height

Answer: (b)

Question : 3

Consider the following statements with reference to observations made by an astronaut on the surface of moon:

  1. The astronaut finds that a simple pendulum continues to oscillate for a much longer time, than that on the earth.
  2. No atmosphere exists there.
Which of the statements given above is/are correct ?

a) Only 2

b) Only 1

c) Both 1 and 2

d) Neither 1 nor 2

Answer: (c)

Question : 4

What is the purpose of ‘evolved Laser Interferometer Space Antenna (eLISA)’ project?

a) To detect gravitational waves

b) To detect the effectiveness of missile defence system

c) To detect neutrinos

d) To study the effect of solar flares on our communication systems

Answer: (a)

Question : 5

Sound moves with higher velocity if

a) temperature of the medium is increased

b) pressure of the medium is decreased

c) humidity of the medium is increased

d) Both (a) and (c) above

Answer: (d)

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