In which of the following cases the object does not possess an accelaration or retardation when it moves in (a)with constant speed along circular path (b)with constant speed along horizontal path WHY? give reason
in reduction the oxidation number of an element is ?
AFridiiiKhaaannn
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December 2022
which one of the following metal can not be refined with electrolyting process a) copper b) silver c) zinc d) lead GIVE REASON WHY
AFridiiiKhaaannn
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December 2022
When three resistances are combined parallel , the combined resistance is equal to a)the sum of three resistance b)equal to the smallest individual resistance c) less than the smallest individual resistance d) greater than the largest individual resistance give reason also in support of ur answer
AFridiiiKhaaannn
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December 2022
find out odd number from the given homologous series a) c2h6 b)c3h8 c)c4h8 d) c4h12 GIVE SMALL REASON
The critical angle of a medium with respect to a vacuum is 30 degree . The velocity of ligt in the medium will be a)3x10power8 m/s b)2x10power8m/s c)1.5x10power8m/s d)3.1x10power8m/s pls dont give a direct answer , give a clear explanation
AFridiiiKhaaannn
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December 2022
the general formula of the homologous series of alcohol is a)CnH2nOH b)CnH2n+1OH c)CnH2n+2OH d)CnH2n-1OH
AFridiiiKhaaannn
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December 2022
A particle experiences constant accelaration for 20secs after starting from rest.If it travels a distance s1 in the first 10secs ad distance s2 in the next 10secs then, (a) s2=s1 (b)s2=2s1 (c)s2=3s1 (d)s2=4s1?
AFridiiiKhaaannn
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December 2022
A body whose speed is constant not must be accelerated but might be accelerated .Why?
AFridiiiKhaaannn
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December 2022
A car is moving at rate of 72km/h and applies brake which provide a retardation of 5ms-2. 1. How much time does ithe car take to stop. 2.how much distance does the car cover before coming to rest? 3. what would be the stopping distence needed if speed of the...
A ball is thrown up with a velocity of 30m/s.How much time will it take to reach the highest point ?
AFridiiiKhaaannn
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December 2022
A boy of mass 50kg can climb a staircase of 24 steps in 3.5 sec .If each step is 20cm high.Calculate the power of the boy. in watt
AFridiiiKhaaannn
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December 2022
If we can find out directly by pythagoras theorem like obvious base and perpendicular will be 10 also so taking ac diagonal we can get 10 root 2 then why the long process.A farmer moves along the boundary of a square field of side 10 metre in 40 second what...
AFridiiiKhaaannn
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December 2022
If 4 equal resistors of equal resistance of 1ohm each is connected in parallel and series their equivalent resistance are a)4ohm and 4ohm b)1/4ohm and 4ohm c) 1/4ohm and 1/4 ohm d) 4 ohm and 1/4 ohm GIVE REASON FOR YOUR ANSWER OR SHOW SCREEN SHOT ...I NEED REASON
AFridiiiKhaaannn
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December 2022
Total internal reflection is possible in a)Only in case of diamond b)when light travels to a denser medium from a lighter medium c)when light travels to a lighter medium from a denser medium d) only in desert areas give small reason in support of your answer
The critical angle of a medium with respect to vacuum is 30 degree . The velocity of light in the medium is a) 3x10power8m/s b)2x108m/s c) 1.5x108m/s d)3.1x108m/s give short explanation
AFridiiiKhaaannn
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December 2022
Benzene is a polymer of a)ethylene b)acetylene c)isoprene d)ethyne ..GIVE SMALL REASON IN SUPPORT OF UR SELECTIVE OPTION
AFridiiiKhaaannn
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December 2022
Which of the follwing is most metallic a)Li b) K c)Na d) Fr GIVE SMALL REASON
AFridiiiKhaaannn
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December 2022
A light and heavy object have same momentum .find out the ratio of their kinetic energywhich on has larger kinetic energy I know the answer but can't understand the process please help me in understanding i am very confuse
AFridiiiKhaaannn
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December 2022
A car goes from a town A to another town B with a speed of 40km/h and returns back to town A with a speed of 60km/h.The average speed of the car during the complete journey is?Please mention the process please
A child hears an echo from a cliff 4 second after the sound from a powerful cracker is produced How far away is the cliff from the child? Velocity of sound in air at 20degree celsius is 344m/s PLease give the whole process properly
AFridiiiKhaaannn
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December 2022
When the distance that an object travels is directly proportional to the length of time it is said to travel with (a)zero velocity(b) constant speed (c) constant accelaration(d) uniform velocity ,I know answer is b but how?explain please
AFridiiiKhaaannn
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December 2022
Which of the following has more heat content a)10g of ice at0degree Celcius .B)10g of water at 10degree Celcius.c)both have same heat content.d)cannot be compared
AFridiiiKhaaannn
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December 2022
My colege has taken away my marks sheet and I want my marksheet for admission in new college and I can't renew in short span of time ,if i take my marksheet from ex college without submitting 4 years of money they will stamp their college symbol on my marksheet...