set 11 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
(a) the frequency of reflected wave will be more than frequency of refracted wave
(b) the reflected wave will travel faster than refracted wave
(c) the wavelength of refracted wave will be more than wavelength of reflected wave
(d) the frequency, wavelength and velocity of reflected and refracted waves will be same as that of incident wave
The correct answers to the above question in:
Answer: (c)
We know that
speed = frequency × wavelength
If the frequency is constant, then speed a wavelength
We know that the speed of the sound waves in water is more than that of air.
Hence option (c) is correct.
Practice light, heat, thermodynamics, wave motion, sound, optics & oscillations (set 11) Online Quiz
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Read more light heat thermodynamics wave sound optics oscillation Based General Science Questions and Answers
Question : 1
A : At high altitude regions the cooking of food becomes difficult. B : Water boils at lower temperature when the pressure is low.
a) A and B are correct and B is the correct explanation of A.
b) Both A and B are wrong.
c) A and B are correct and B is not the correct explanation of A.
d) A is correct but B is wrong.
Answer »Answer: (a)
Question : 2
What is the function of the thermostat of a refrigerator?
a) To increase the freezing point
b) To maintain constant temperature
c) To lower the temperature
d) To decrease the melting point
Answer »Answer: (b)
Question : 3
A biotechnique in which ultrasonic sound is used
a) E.C.G.
b) E.E.G.
c) Sonography
d) X-ray
Answer »Answer: (c)
Question : 4
Xeric condition refers to
a) low humidity
b) high evaporation
c) low temperature
d) extreme temperature
Answer »Answer: (a)
Question : 5
Assertion (A):
With the increase of temperature, the viscosity of glycerin increases.
Reason (R):
Rise of temperature increases kinetic energy of molecules.
Code
a) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
b) (A) is true, but (R) is false
c) Both (A) and (R) are true and (R) is the correct explanation of (A)
d) (A) is false, but (R) is true
Answer »Answer: (d)
Question : 6
The minimum distance of clear vision for a normal healthy eye of human being is supposed to be
a) 15 cm
b) 10 cm
c) 50 cm
d) 25 cm
Answer »Answer: (d)
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