Refer to NEET Physics Newtons Law of Cooling MCQs Set A provided below available for download in Pdf. The MCQ Questions for Full Syllabus Physics with answers are aligned as per the latest syllabus and exam pattern suggested by NEET, NCERT and KVS. Multiple Choice Questions for Newtons Law of Cooling are an important part of exams for Full Syllabus Physics and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for NEET Full Syllabus Physics and also download more latest study material for all subjects
MCQ for Full Syllabus Physics Newtons Law of Cooling
Full Syllabus Physics students should refer to the following multiple-choice questions with answers for Newtons Law of Cooling in Full Syllabus.
Newtons Law of Cooling MCQ Questions Full Syllabus Physics with Answers
Question: Newton’s law of cooling is applicable for
a) small excess of temperature over the surrounding
b) large excess of temperature over the surrounding
c) very large excess of temperature over the surrounding
d) any excess of temperature over the surrounding
Answer: small excess of temperature over the surrounding
Question: Which of the given graphs proves Newton’s law of cooling?
a)
b)
c)
d) None of these
Answer:
Question: A body cools in a surrounding of constant temperature 30°C. Its heat capacity is 2J/kg °C. Initial temperature of the body is 40°C. Assume Newton's law of cooling is valid. The body cools to 38°C in 10 minutes. In further 10 minutes it will cool from 38°C to
a) 36.4°C
b) 37°C
c) 37.5°C
d) 36°C
Answer: 36.4°C
Question: Rate of cooling of a spherical body is directly proportional to [where T = body temperature T0 = surrounding temperature
a) (T – T0)
b) T/T0
c) T0/T
d) None of these
Answer: (T – T0)
Question: A body cools from 50.0°C to 49.9°C in 5s. How long will it take to cool from 40.0°C to 39.9°C? Assume the temperature of surroundings to be 30.0°C and Newton’s law of cooling to be valid
a) 10 s
b) 20 s
c) 5 s
d) 2.5 s
Answer: 10 s
Question: In a room where the temperature is 30°C, a body cools from 61°C to 59°C in 4 minutes. The time (in minutes) taken by the body to cool from 51°C to 49°C will be
a) 6
b) 4
c) 5
d) 8
Answer: 6
Question: In a surrounding medium of temperature 10°C, a body takes 7 min for a fall of temperature from 60°C to 40°C. In what time the temperature of the body will fall from 40°C to 28°C?
a) 7 min
b) 11 min
c) 14 min
d) 21 min
Answer: 7 min
Question: A container contains hot water at 100°C. If in time T1 temperature falls to 80° C and the time T2 temperature falls to 60°C form 80°C, then
a) T1 < T2
b) T1 = T2
c) T1 > T2
d) None of these
Answer: T1 < T2
Question: If a body cools down from 80°C to 60°C in 10 min when the temperature of the surrounding is 30°C, then the temperature of the body after next 10 min will be
a) 48°C
b) 50°C
c) 30°C
d) None of these
Answer: 48°C
Question: A block of steel heated to 100ºC is left in a room to cool. Which of the curves shown in fig., represents the correct behaviour?
a) A
b) B
c) C
d) None of these
Answer: A
Question: A body cools from 50°C to 40°C in 5 minutes. The surrounding temperature is 20°C. In what further time (in minutes) will it cool to 30°C?
a) 25/3
b) 10
c) 15/2
d) 5
Answer: 25/3
Question:
a) one
b) four
c) three
d) two
Answer: one
Question:
a)
b)
c)
d) Noner of these
Answer:
Question:
a) R1 : R2 = 3 : 2
b) R1 : R2 = 2 : 3
c) R1 : R2 = 5 : 4
d) None of these
Answer: R1 : R2 = 3 : 2
Question: Newton’s law of cooling is applicable for
a) None of these
b) large excess of temperature over the surrounding
c) very large excess of temperature over the surrounding
d) any excess of temperature over the surrounding
Answer: None of these
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MCQs for Newtons Law of Cooling Physics Full Syllabus
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