set 14 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 : Consider the following statements:
  1. Two bodies in contact must be in thermal equilibrium.
  2. A tightly closed metal lid of a glass bottle can be opened more easily if it is put in hot water for sometime.
  3. The coefficient of expansion of metal lid is greater than that of glass.
Which of the statements are correct?

(a) 2 and 3

(b) 1 and 3

(c) 1 and 2

(d) 1, 2 and 3

The correct answers to the above question in:

Answer: (d)

A metal is a good conductor of heat and electricity while glass on the other hand is a poor conductor of heat.

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

Question : 1

The least distance of distinct vision of a normal eye of an adult is

a) 25 mm

b) 25 m

c) 25 cm

d) None of these

Answer: (c)

Question : 2

For seeing a cricket match, we prefer binoculars to the terrestrial telescope, because

a) to avoid chromatic aberration

b) binoculars give three-dimensional view

c) terrestrial telescope gives inverted image

d) to have larger magnification

Answer: (b)

Question : 3

An oscilloscope is an instrument which allows us to see waves produced by

a) X-rays

b) Visible light

c) Sound

d) Gamma rays

Answer: (c)

Question : 4

Magnification produced by a rear view mirror fitted in vehicles

a) is equal to one

b) is less than one

c) is more than one

d) can be more than or less than one depending upon the position of the object in front of it

Answer: (b)

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