1.rate of evaporation depends on
a)surface area of liquid
b)temperature
c)nature of liquid
d)material of the container
2.radius of curvature of a concave mirror is 20cm. if an object is placed on principle axises, 12cm away from principle focus then image is formed
a)on c
b)on F
c)between c&f
d) between p&e
3.water added to the quick lime .this reaction is
a)photo chemical reaction
b)photo reaction
c)endothermic reaction
d)exothermic reaction
TPS:
single answer type na?
Answers
Answered by
4
1. Answer is A.
Rate of evaporation depends on surface area of the liquid.
If it is multiple answer, Answers are A and B.
2. Answer is D.
R = 20cm
f = R/2 = 10cm
object is placed at 12cm.
So it is between focus and centre of curvature.
Image will be formed between C and infinity.
3. Answer is D.
Heat is generated in this reaction.
Rate of evaporation depends on surface area of the liquid.
If it is multiple answer, Answers are A and B.
2. Answer is D.
R = 20cm
f = R/2 = 10cm
object is placed at 12cm.
So it is between focus and centre of curvature.
Image will be formed between C and infinity.
3. Answer is D.
Heat is generated in this reaction.
Rate of evaporation alsp depends upon temperature i think , because since more temperature we provide more will be evaporation ? So i think it also should be in the answer
yes, you are right. More temperature means more kinetic energy of the molecules at the surface and it will increase the rate of evaporation.
Not only temperature, even the nature of liquid is also a factor. If the inter-molecular bonds are weak, evaporation will be faster.
Not only temperature, even the nature of liquid is also a factor. If the inter-molecular bonds are weak, evaporation will be faster.
but the user needs one answer, given in the book. Which is option A.
okay Mukuss?
Okiee.... But U should mention about (b) option , Both can be correct
I can give argument for answer A, B, C and D. all can be correct.
Yeah... :P i m also saying this
Okay, I changed the answer!!
ohh... gudd... ^_^
Answered by
1
option a) , option d), option d)
i hope this useful for u
i hope this useful for u
pls mark as a best
pls mark as best
thank q
please mark as a brinilist
i had all ready marked as best to another one
i m sry
it's ok it's use ful iam happy
s thank q a lot for ur answer
welcome
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