set 1 MCQ Questions & Answers Detailed Explanation

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

Questions : A Centigrade thermometer and Fahrenheit thermometer are dipped in boiling water. The temperature of water is lowered till the Fahrenheit thermometer registers half of its upper fixed point. What is the corresponding fall temperature registered by the Centrigrade thermometer?

(a) Approximately 41°C

(b) Half of its range of temperature between the upper and the lower fixed points

(c) Approximately 59°C

(d) 18°C

The correct answers to the above question in:

Answer: (a)

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

Question : 1

Find out the odd colour from the following options.

a) Red

b) Brown

c) Green

d) Yellow

Answer: (b)

Question : 2

In fibre optics communication, the signal travels in the form of

a) Micro wave

b) Radio wave

c) Light wave

d) Electric wave

Answer: (c)

Question : 3

Power of accommodation of eye implies

a) change of focal length of eye lens

b) control intensity

c) prevent internal reflection of light

d) All of the above

Answer: (a)

Question : 4

Direct viewing of Sun during total solar eclipse causes irreversible damage to eyes. The retinal burn is caused by which one of the following components of the Sun rays?

a) Ultra-violet light

b) Rainbow light

c) Heat

d) Infra-red light

Answer: (a)

Question : 5

Red light is used in traffic signals because

a) It is visible to people even with bad eyesight

b) It is beautiful

c) It has the longest wavelength

d) None of the above

Answer: (c)

Question : 6

Which of the following parts of eye protects the eye and gives it shape?

a) Yellow spot

b) Choroid

c) Sclera

d) Ciliary muscles

Answer: (c)

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