Quiz on Physics Set 242

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Quiz on Physics Set 242 :

Question 1 : 

By what process is heat transmitted from the filament of a bulb to the glass?
A. conduction
B. convection
C. radiation
D. none of these

View Answer
Correct Ans: Option C

Question 2 : 

Hot coffee is poured simultaneously in four metallic cups painted outside with different types of paints. After some time, the coffee will be found coldest in the cup painted
A. rough white
B. shining white
C. rough black
D. shining black

View Answer
Correct Ans: Option C

Question 3 : 

Light colour dresses are preferred in summer because
A. light colour is good radiator of heat
B. light colour is poor absorber of heat
C. it soaks sweat faster
D. they allow body heat to escape faster

View Answer
Correct Ans: Option B

Question 4 : 

By which of the methods a cup of hot coffee lose heat if placed on a metal table in a room?
A. conduction and radiation
B. conduction and convection
C. convection and radiation
D. conduction, convection, radiation and evaporation

View Answer
Correct Ans: Option D

Question 5 : 

A cup of tea cools from 90 degree Celsius to 80 degree Celsius in exactly one minute. It will cool from 70 Celsius to 60 degree Celsius in
A. less than one minute
B. exactly one minute
C. nearly in one minute
D. more than one minute

View Answer
Correct Ans: Option D

Question 6 : 

Drinks remain hot or cold for a long time in a thermos flask because of the
A. presence of air, which is a bad conductor of heat, in between the double walls
B. silver coating on the inside of the double walls
C. vacuum between the double walls
D. combine effects of (b) and (c)

View Answer
Correct Ans: Option D

Question 7 : 

A little ether on the palm gives a cooling sensation because
A. it is a cold liquid
B. absorbs heat from palm and evaporates
C. enters the pores of the skin
D. condenses on the palm

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Correct Ans: Option B

Question 8 : 

Water stored in earthen jar remain cool because
A. earthen jar has high heat capacity
B. earthen jar radiate heat quickly
C. water oozing out of the pores of the jar get evaporated
D. earthen jar absorbs heat from water

View Answer
Correct Ans: Option C

Question 9 : 

We feel comfortable under a fan during summer because
A. it throws cool air on us
B. it sets the air in motion and increases the evaporation rate of sweat
C. it produces convection current
D. it produces air which takes heat away

View Answer
Correct Ans: Option B

Question 10 : 

Perspiration (sweat) is maximum when
A. temperature is high and air is humid
B. temperature is high and air is dry
C. temperature is low and air is humid
D. temperature is low and air is dry

View Answer
Correct Ans: Option A

Quiz Summary

Here the correct answers of every question in this quiz.

Q.1 [C],     Q.2 [C],     Q.3 [B],     Q.4 [D],     Q.5 [D],     Q.6 [D],     Q.7 [B],     Q.8 [C],     Q.9 [B],     Q.10 [A],    


Total Questions: 10
Your score:
Subject: Physics
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