# Important Physics Questions for RRB Group D Set-3 PDF

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### Important Physics Questions for RRB Group D Set-3 PDF

Download Top-15 Important Physics Questions for RRB Group D Set-3 PDF. RRB Group – D Physics questions based on asked questions in previous exam papers very important for the Railway Group-D exam.

Question 1:Â In which of the following we find difference in the sounds made by sitar and veena?

a)Â Pitch

b)Â Quality

c)Â Both 1 and 2

d)Â None of these

Question 2:Â In which of the following cryogenic engines are used ?

a)Â Frost free refrigerators

b)Â Sub Marine propulsion

c)Â Rockets

d)Â Researches in superconductivity

Question 3:Â Farad is unit of .

a)Â Capacitance

b)Â Reactance

c)Â Electric charge

d)Â Electric conductance

Question 4:Â Find the power of a convex lens if the image formed is at a distance of 25 cm from the lens when the object is placed on the other side of the lens at 12 cm from the optical centre?

a)Â -4.33 diopters

b)Â 12.33 diopters

c)Â -12.33 diopters

d)Â 4.33 diopters

Question 5:Â Which physical quantity is measured in ‘siemens’?

a)Â Electric potential

b)Â Electrical conductance

c)Â Magnetic ï¬‚ux

d)Â Refractive index

Question 6:Â What is the unit of the physical quantity, Magnetic flux density?

a)Â siemens

b)Â weber

c)Â henry

d)Â tesla

Question 7:Â With reference to gravity, what is G called?

a)Â Gravitational constant

b)Â Gravitational attraction

c)Â Gravitational force

d)Â Acceleration due to gravity

Question 8:Â Rectifiers convert ………………

a)Â high voltage to low voltage

b)Â low voltage to high voltage

c)Â AC to DC

d)Â DC to AC

Question 9:Â Which among the following is not an inner planet?

a)Â Mercury

b)Â Saturn

c)Â Venus

d)Â Earth

Question 10:Â …………is the perpendicular distance between point of application of force and axis of rotation.

a)Â Moment arm

b)Â Moment of Inertia

c)Â Altitude

d)Â Base

Question 11:Â Which planet is known as red planet?

a)Â Mercury

b)Â Pluto

c)Â Mars

d)Â Venus

Question 12:Â The phenomena of raising the outer edge of the curved roads above the inner edge to provide necessary centripetal force to the vehicles to take a safe turn is called _____.

Question 13:Â Which colour is formed when Red and Green are mixed?

a)Â Light blue

b)Â Yellow

c)Â White

d)Â Grey

Question 14:Â Which of the following pair is INCORRECT?
I. Parsec – Distance
II. Barrel – Liquid
III. Light year – Time

a)Â Only III

b)Â Only I and III

c)Â Only II

d)Â All are correct

Question 15:Â The side mirrors of vehicles are of which type of mirrors?

a)Â Convex

b)Â Concave

c)Â Plane

d)Â Inverted