MCQ Questions for Class 11 Physics Chapter 11 Thermal Properties of Matter with Answers

Thermal Properties of Matter Class 11 Physics MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 11 Physics Chapter 11 Thermal Properties of Matter with Answers Pdf free download. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. We have Provided Thermal Properties of Matter Class 11 Physics MCQs Questions with Answers to help students understand the concept very well.

Class 11 Physics Chapter 11 Quiz

Class 11 Physics Chapter 11 MCQ Online Test

You can refer to NCERT Solutions for Class 11 Physics Chapter 11 Thermal Properties of Matter to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Thermal Properties of Matter Class 11 Physics MCQ online test

Q1.	Two stars A and B radiate maximum energy at 3600°A and 3600°A respectively. Then the ratio of absolute temperatures of A and B is
	A.256 : 81
	B.81 : 256
	C.3:4
	D.4:3

Ans: 4:3

Q2.	Which of the following will radiate heat to large extent?
	A.Rough surface
	B.Polished surface
	C.Black rough surface
	D.Black polished surface

Ans: Black rough surface

Q3.	Two spheres made of same material have radii in the ratio 2 : 1. if both the spheres are at same temperature, then what is the ratio of heat radiation energy emitted per second by them?
	A.1:4
	B.4:1
	C.3:4
	D.4:3

Ans: 4:1

Q4.	The earth intercepts approximately one billionth of the power radiated by the sun. if the surface temperature of the sun were to drop by a factor of 2, the average radiant energy incident on earth per second would reduce by factor of
	A.2
	B.4
	C.8
	D.16

Ans: 16

Q5.	A bucket full of hot water is kept in a room and it cools from 75°C to 70°C in t1 minutes from 70°C to 65°C in t2 minutes and from 65°C to 60°C in t3 minutes; then
	A.t1 – t2 = t3
	B.t1 < t2 < t3
	C.t1 > t2 > t3
	D.t1 < t2 > t3

Ans: t1 < t2 < t3

Q6.	A sphere, a cube and a thin circular plate, all made of the same material and having the same mass are initially heated to a temperature of 3000°K, which of these will cool fastest?
	A.Sphere
	B.Cube
	C.Plate
	D.None

Ans: Plate

Q7.	A perfectly black body emits radiation at temperature T1 K. if it sis to radiate 16 times this power, its temperature T². will be
	A.T² = 16 T1
	B.T² = 8 T1
	C.T1 = 4 T1
	D.T² = 2 T1

Ans: T² = 2 T1

Q8.	Unit of Stefans constant is given by
	A.W/ m K²
	B.W/ m² K²
	C.W²/ m² K4
	D.W/ mK

Ans: W/ m² K²

Q9.	The good absorber of heat are
	A.Non-emitter
	B.Poor-emitter
	C.Good-emitter
	D.Highly polished

Ans: Good-emitter

Q10.	A black body is at a temperature of 500K. it emits energy at a rate which is proportional to
	A.500
	B.(500)2
	C.(500)3
	D.(500)4

Ans: (500)4

Q11.	The coefficient of transmission of a perfectly black body is
	A.Zero
	B.One
	C.0.5
	D.0.75

Ans: Zero

Q12.	Newtons law of cooling is also applicable to
	A.Convection losses
	B.Natural convection losses
	C.Forced convection losses
	D.None of the above

Ans: Forced convection losses

Q13.	A sphere, a cube and a thin circular plate all made of the same material and having the same mass are initially heated to a temperature of 300°C. which one of these cools faster?
	A.Circular plate
	B.Sphere
	C.Cube
	D.All will cool at the same rate

Ans: Circular plate

Q14.	A sphere, a cube and a thin circular plate, all made of the same material and having the same mass are initially heated to a temperature of 3000°K, which of these will cool fastest?
	A.Sphere
	B.Cube
	C.Plate
	D.None

Ans: Plate

Q15.	Which of the following statement is wrong?
	A.Rough surfaces are better radiators tan smooth surfaces
	B.Highly polished mirror surfaces are very good radiators
	C.Black surfaces are better absorbers then white ones
	D.Black surfaces are better radiators then white ones

Ans: Highly polished mirror surfaces are very good radiators

Q16.	In which process the rate of transfer of heat is maximum?
	A.Conduction
	B.Convection
	C.Radiation
	D.In all these heat is transferred with the same velocity

Ans: Radiation

Q17.	Which of the following will radiate heat to large extent?
	A.Rough surface
	B.Polished surface
	C.Black rough surface
	D.Black polished surface

Ans: Black rough surface

Q18.	A body cools from 60°C to 50°C in 10 minutes. If the room temperature is 25°C and assuming Newtonos law of cooling to hold good, the temperature of the body at the end of the next 10 minutes will be
	A.38.5°C
	B.40°C
	C.42.85°C
	D.45°C

Ans: 42.85°C

Q19.	A surface at temperature T0°K receives power P by radiation from a small sphere at temperature T >> T0 and at a distance d. if both T and d are doubled, the power received by surface will becomes approximately
	A.P
	B.2p
	C.4p
	D.16p

Ans: 4p

Q20.	The process of heat transfer in which heat is transferred with actual migration of medium particles is known as (AFMC-94)
	A.Conduction
	B.Convection
	C.Radiation
	D.Reflection