McHenry99:
The distance between an object and virtua image of a convex lens is 27...the magnification of d image is 4..calculate the focal length of the lens...
A..30 B..4.69 C..9 D.12 E..3.48

let the distance btw the object and image represent u and v
the U +(-V )=27 (virtual image are always negative)

U=27+V..........(1)

magnification =V/U

= 4=V/27+V(remember U=27+V)
V=-36cm.
but the image has magnification of 4 ie 4 times the object distance.

U= 36/4=9cm

using mirror formula

1/f = 1/U+1/V
1/f =1/9+1/-36(virtual image)

f=36/3=12cm.

Pukka36:
BDB

2/3

Osamuyipeace:
CDB CDB

2/3

medwhite0:

DCB

modified.
DDB.

3/3

The distance between an object and virtua image of a convex lens is 27...the magnification of d image is 4..calculate the focal length of the lens...
A..30 B..4.69 C..9 D.12 E..3.48


The equation rep. the rxn of metal M with water in the cold.
M + 2H2O ---- > M(OH)2 + H2
Which of the followhing metals is most likely to be M ?
A. Fe
B. Cu
C. Na
D. Ca


Which of d following Protein breakdown stages is correct A protein-polypetides-amino acid B protein-peptones-polypeptides-amino acid C amino acid-protein-polypeptides- peptones D protein-poplypeptides-peptones-amino acid

medwhite0:
C.

Correct.

The cation that is insoluble in excess NaOH is a. Pb2+ b. Zn2+ c. Ca2+ d. Al3+

Pukka36:
Biology?

Alright.

RobinHez:

I already told u!!
Stop trying to post lengthy questions....
Post them once in a while

See me now! I just freestyle small then withdraw...me I got banned 3 times in one day

Okay...no more questions for now

Pukka36:
McHenry99........Clear the road for am

Lay the red carpet too.

Can someone pls enlighten me on this banning stuff...after been freed yesterday...few mins later I was banned again...I don't even know why.

Pukka36:
McHenry99,welcome back for NL pris.... U know the rest

RobinHez:

welcome from detention! u've now been baptized into the NL family...

u were banned frm trying to post ur questions , yes or yes?

Yes Bro...I post a physics question yesterday and I was banned immediately

RobinHez:

welcome from detention! u've now been baptized into the NL family...

u were banned frm trying to post ur questions , yes or yes?

Yes Bro...I post a physics question yesterday and I was banned

Did I just get banned for no reason.
I wonder the wrong I did yesterday for the Mod or who ever is controlling this thread to get me banned for a day.


Blacks!

Pukka36:
When one person possesses a thing,the name should carry an apostrophe



U grab

I tot you marked me wrong for that number...well we're cool.

McHenry99:
Explain number 4 please.@Pukka

Issorit...I got it...never mind.

Explain number 4 please.@Pukka

Pukka36:
Diaris godu ooh

Yeah...life goes on.

Ada96:

sharap my friend ...can't you see 1/5 down der...

Scrypt:


That is still failing. . English is hard.

Nope English isn't hard...her English is hard.

Pukka36:
Result is out oooh!



OsamuyiPeace 4/5
Scrypt 3/5...Na 0 I be wan give U
Ada96 3/5
Princecalm 1/5
McHenry99 1/5Sowie


DCBBC!!!



*Catwalks outta thread*

Damn!
I changed number 2...

Chai.

Pukka36:
Tomori wears the breeches Means A.an arrogant woman B.a hardworking woman C.a brilliant woman D.a woman who rules her husband E.a proud woman




A sesquipedalian word is a A.mono-syllabic word B.a bi-syllabic word C.a poly-syllabic word D.a six-syllable word D.an esoteric word



Tobie used to buy........at the end of the month A.four dozens eggs B.four dozen eggs C.four dozens of egg D.four dozen of eggs




Batero is a friend.......A.of Natego B.of Natego's C.for Natego D.to Natego




The man who is fond of laying too much emphasis on rules is often accused of.......A.inventory B.casuistry C.pedantry D.industry




Cc:English Rambos
Cc:Scrypt
Cc:RobinHez
Cc:Ada96
Cc:McHenry99
Cc: Princecalm
Cc:...Everyone present here

A( I hate cliches)
C
D
B
B

McHenry99:
9)In the Russian flag(red,blue,green)is viewed in a pure Cyan light. which of the following set of colours would be observed on the flag
a)red ,black green
b)red,black black
c)black,green ,blue
d)black,blue,green

when a blue card is observed in a magenta glass the card appeared
a)blue
b)green
c)black
d)red.

D
A

Osamuyipeace:
CA

1/2

medwhite0:
DD

1/2

RobinHez:

a,c

wrong

9)In the Russian flag(red,blue,green)is viewed in a pure Cyan light. which of the following set of colours would be observed on the flag
a)red ,black green
b)red,black black
c)black,green ,blue
d)black,blue,green

when a blue card is observed in a magenta glass the card appeared
a)blue
b)green
c)black
d)red.

Complete each of the following sentences by choosing the option that most suitably fills the space;
The managing director did not pay his staff last month ....?

A. didn't he


B. had he not


C. is not it


D. did he


E. has he



View Explanation

Question No:52

Complete each of the following sentences by choosing the option that most suitably fills the space;
Although he is in all respects a poor student, he has managed to buy a tape recorder to improve his .... of french

A. mastery


B. mastering


C. speaking


D. ideas


E. thinking



View Explanation

Question No:53

Complete each of the following sentences by choosing the option that most suitably fills the space;
Granted you are my senior by one year, you cannot ....around as if i were your servant

A. control


B. dribble


C. order


D. ask


E. compel



View Explanation

Question No:54

Complete each of the following sentences by choosing the option that most suitably fills the space;
.... mark an important step in the history of industrial revolution

A. The invention of the locomotive engine


B. The discovery of locomotion


C. The discovery of the engine


D. The process of locomotion



View Explanation

Question No:55

Complete each of the following sentences by choosing the option that most suitably fills the space;
Because the referee was partial and his opponent rough, the loser of the wrestling match received .... cheers than the winner

A. thunderous


B. many more


C. overwhelming


D. a little more


E. several

YOU GUYS ARE FUNNY MEHN!