set 2 MCQ Questions & Answers Detailed Explanation

MOST IMPORTANT general science mcq - 16 EXERCISES

Top 30,000+ General Science Memory Based Exercises

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

Questions : Thermostat is a device which

(a) Measures temperature

(b) Automatically regulates the temperature of a system

(c) Measures heat

(d) Automatically regulates pressure of a system

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

The Sky appears blue due to

a) Blue light is minimum absorbed by atmosphere

b) The red colour is scattered most

c) Blue colour is scattered most

d) Red light is ultimately absorbed by atmosphere

Answer: (c)

Question : 2

Total internal reflection can take place when light travels from

a) Air to water

b) Water to glass

c) Diamond to glass

d) Air to glass

Answer: (c)

Question : 3

The focusing in the eye is done by

a) To and fro movement of the retina

b) To and fro movement of the lens

c) Change in the convexity of the lens

d) Change in the refractive index of the eye fluid

Answer: (c)

Question : 4

Which one of the following is not electromagnetic in nature?

a) X-rays

b) Cathode-rays

c) Gamma-rays

d) Infrared-rays

Answer: (b)

Question : 5

The colour of light is determined by its

a) Intensity

b) Wavelength

c) Amplitude

d) Velocity

Answer: (b)

Question : 6

The Sun appears red during Sunset

a) Refraction of light

b) Scattering of light

c) Reflection of light

d) Diffraction of light

Answer: (b)

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