Physics - MCQs with answers - Part II
Choose the correct option for each of the questions belowQ1. The spherical body moves with a uniform angular velocity "a", around a circular path of radius "r". Which one of the following statements is correct?a) The body has no acceleration
b) The body has a radial acceleration directed towards the centre of the path.
c) The body has a radial acceleration directed away from the centre of the path.
d) The body earlier has radial acceleration but loses it after some time .
View Answer / Hide AnswerANSWER:b) The body has a radial acceleration directed towards the centre of the path.
a) Blue light
b) Green light
c) Red light
d) Yellow light
View Answer / Hide AnswerQ3.Consider the following statements:1. A flute of smaller length produces waves of lower frequency.
2. Sound travels in rocks in the form of longitudinal elastic waves only.
Which of the statements given above is /are correct.
a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2
View Answer / Hide AnswerANSWER: b) 2 only
A flute of smaller length produces waves of higher frequency.
a) Reflected light
b) Dispersion
c) Lateral Inversion
d) Separation
View Answer / Hide AnswerQ5. Uses of Multiple Reflection of sound can be observed in instruments likea) Megaphone
b) Horn
c) Speakers
d) Stethoscope
View Answer / Hide AnswerANSWER: d) Stethoscope
Stethoscope is a medical instrument used for listening sounds produced within the body mainly in the heart or lungs. Sound of patients heart beat reaches the doctor's ears by multiple reflection of sound.
This can be explained on the basis of the phenomenon of
a) Reflection and Diffraction
b) Reflection and transmission
c) Diffraction and transmission
d) Refraction, Diffraction and transmission
View Answer / Hide AnswerANSWERd) Refraction ,Diffraction and transmission
Explanation-The compact disc is transparent for light as it is an "Optical disc". When light travels through it in a straight line it gets refracted due to deviation from its path,and gets diffracted after passing through it and seven colours are quickly transmitted or appeared.
a) Carbon dioxide
b) Dust particles
c) Helium
d) Water vapors
View Answer / Hide AnswerANSWER: b) Dust particles
a) Blotting of ink
b) rising of underground water
c) the spreading of water drops on cotton cloths.
d)the rising of water from the root of the plants to the leaves.
View Answer / Hide AnswerANSWER: d)the rising of water from the root of the plants to the leaves.
a) Space travel, surgery, and magnetic levitation
b) Surgery, magnetic levitation and telemetry
c) Space travel, surgery and telemetry
d) Space journey ,magnetic levitation and telemetry
View Answer / Hide AnswerANSWER: d) Space journey ,magnetic levitation and telemetry
Cryogenic technology uses very low temperature. This technology is used in space craft engine, production of very high magnetic,field and remote sensing.
a) Wavelength, frequency and velocity
b) Velocity and frequency
c) Wavelength and frequency
d) Wavelength and velocity
View Answer / Hide AnswerANSWER: d) Wavelength and velocity
When light waves pass from air to glass refraction takes place due to different velocities of light in different media without affecting frequency .Frequency remains constant when light travels from one medium to another medium .Velocity is directly proportional to wavelength. And thus wavelength also changes.
