Physics
General
Easy
Question
A concave lens of focal length f forms an image which is times the size of the object What is the distance of the object from the lents?
The correct answer is:
Related Questions to study
chemistry-
ΔH for the reaction, 
will be -
ΔH for the reaction, will be -
chemistry-General
physics
One microammeter has a resistance of 100Ω and a full scale range of 50
It can be used as a woltmeter or as a higher range ammeter provided a resistance is added to it Pick the correct range and resistance combinations (s)
One microammeter has a resistance of 100Ω and a full scale range of 50 It can be used as a woltmeter or as a higher range ammeter provided a resistance is added to it Pick the correct range and resistance combinations (s)
physicsGeneral
chemistry-
If ΔG°>0forareactionthen-
If ΔG°>0forareactionthen-
chemistry-General
chemistry-
Statement-I : Benzoic acid on nitration will give m– Nitro benzoic acid
Statement-II : –COOH group will increase e— density on meta position
Statement-I : Benzoic acid on nitration will give m– Nitro benzoic acid
Statement-II : –COOH group will increase e— density on meta position
chemistry-General
chemistry-
Which of the following reagents are involved in the following transformation?
Which of the following reagents are involved in the following transformation?
chemistry-General
chemistry-
chemistry-General
chemistry-
Which of the following is used to perform following transformation :
Which of the following is used to perform following transformation :
chemistry-General
chemistry-
Which of the following compounds react with aniline to give acetanilide : Which of the following compounds react with aniline to give acetanilide
Which of the following compounds react with aniline to give acetanilide : Which of the following compounds react with aniline to give acetanilide
chemistry-General
chemistry-
Consider the following reaction
Consider the following reaction
chemistry-General
chemistry-
In this reaction the product (E) is :
In this reaction the product (E) is :
chemistry-General
chemistry-
The value of ΔHforthecombustionofC(s)is –94.4Kcal.TheheatofformationofCO2(g)is-
The value of ΔHforthecombustionofC(s)is –94.4Kcal.TheheatofformationofCO2(g)is-
chemistry-General
chemistry-
The following are the heats of reactions-
i)ΔHOofHO(l)=–68.3Kcalmol–1
ii)ΔHO comb ofC2H4 =–337.2Kcalmol–1
iii) ΔHO comb ofC2H4 =–363.7Kcalmol–1Then heat change for the reaction
C2H2+H2→C2H4is-</span
The following are the heats of reactions-
i)ΔHOofHO(l)=–68.3Kcalmol–1
ii)ΔHO comb ofC2H4 =–337.2Kcalmol–1
iii) ΔHO comb ofC2H4 =–363.7Kcalmol–1Then heat change for the reaction
C2H2+H2→C2H4is-</span
chemistry-General
chemistry-
Theheatevolvedduringthecombustionof112litre of water gas(mixtureofequalvolumeofH2andCO)
is: Given
H2(g)+1/2O2(g)=H2O(g);ΔH=–241.8KJ
CO(g)+1/2O2(g)=CO2(g);ΔH=–283KJ</span
Theheatevolvedduringthecombustionof112litre of water gas(mixtureofequalvolumeofH2andCO)
is: Given
H2(g)+1/2O2(g)=H2O(g);ΔH=–241.8KJ
CO(g)+1/2O2(g)=CO2(g);ΔH=–283KJ</span
chemistry-General
physics
What is the relation between figure of merit (K) and current sensitivity 
?
What is the relation between figure of merit (K) and current sensitivity ?
physicsGeneral
chemistry-
For the reaction,
i)H2(g)+Cl2(g)→2HCl(g)+xKJ
ii)H2(g)+Cl2(g)→2HCl(
)+Ykj Which one of the following statementis correct:
For the reaction,
i)H2(g)+Cl2(g)→2HCl(g)+xKJ
ii)H2(g)+Cl2(g)→2HCl()+Ykj Which one of the following statementis correct:
chemistry-General
