set 16 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
- The minimum distance between the source of sound and the reflecting body should be 17 m.
- The wavelength of sound should be less than the height of the reflecting body.
(a) 1 and 2 both
(b) 1 only
(c) 2 only
(d) None
The correct answers to the above question in:
Answer: (a)
The minimum distance between source and reflector of sound is given by,
ddim= $vt/2$
Practice light, heat, thermodynamics, wave motion, sound, optics & oscillations (set 16) Online Quiz
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Read more light heat thermodynamics wave sound optics oscillation Based General Science Questions and Answers
Question : 1
In driving a car which type of mirror would you like to use for observing traffic at your back?
a) Convex mirror
b) Spherical mirror
c) Concave mirror
d) Plain mirror
Answer »Answer: (a)
Question : 2
Opening the door of refrigerator kept in the room
a) You can cool the room to the temperature of refrigerator
b) You are warm the room a little
c) You can cool the room to some degree
d) You can neither cool nor warm the room
Answer »Answer: (b)
Question : 3
Consider the following statements:
- If magenta and yellow coloured circles intersect, the intersected area will have red colour.
- If cyan and magenta coloured circles intersect, the intersected area will have blue colour.
a) 1 and 2 both
b) 1 only
c) 2 only
d) None
Answer »Answer: (a)
A combination of red and blue colours results in the formation of magenta colour.
Where a combination of red and green colour results in the formation of yellow colour.
Thus on a combination of magenta and yellow colour red colour will be highlighted.
On the other side combination of blue and green results in the formation of cyan colour.
A combination of red and blue colours produces a magenta colour.
Therefore, on a combination of cyan and magenta colours, the blue colour will be more highlighted.
Question : 4
Maximum temperature inside pressure cooker depends on
a) Area of hole on the top and food being cooked
b) Weight kept on hole at top and food being cooked
c) Area of hole on the top and weight kept on it
d) Area of hole on the top only
Answer »Answer: (c)
Question : 5
The least distance (in cm) of distinct vision in
a) 75
b) 5
c) 25
d) 100
Answer »Answer: (c)
Question : 6
Rear-view mirror used in a vehicle is a
a) plane mirror
b) concave mirror
c) convex mirror
d) None of these
Answer »Answer: (c)
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