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Physics-

General

Easy

Question

If emf of battery is 100 V, then what was the resistance of Rheostat adjusted at reading ( i=2A,V=20V)

10W
20W
30W
40W

The correct answer is: 40W

Related Questions to study

In the experiment, the curve between VX andVW is shown as dotted line (A) If we use an another wire of same material, but with double length and double radius. Which of the curve is expected.

In the experiment, the curve between VX andVW is shown as dotted line (A) If we use an another wire of same material, but with double length and double radius. Which of the curve is expected.

physics-General

The adjacent graph shows the extra extension (Vx) of a wire length 1m suspended from the top of a roof at one end with an extra load Vw connected to the other end . If the cross sectional area of the wire is $10 to the power of negative 6 end exponent m to the power of 2 end exponent$ , calculate the Young’s modulus of the material of the wire.

The adjacent graph shows the extra extension (Vx) of a wire length 1m suspended from the top of a roof at one end with an extra load Vw connected to the other end . If the cross sectional area of the wire is $10 to the power of negative 6 end exponent m to the power of 2 end exponent$ , calculate the Young’s modulus of the material of the wire.

physics-General

Catalyst only

Catalyst only

chemistry-General

parallel

If $text end text f colon left square bracket negative 2 comma 2 right square bracket rightwards arrow R text is end text$ defined by $f left parenthesis x right parenthesis equals open curly brackets table row cell fraction numerator square root of 1 plus c x end root minus square root of 1 minus c x end root over denominator x end fraction comma text end text text f end text text o end text text r end text text end text minus 2 less or equal than x less than 0 end cell row cell fraction numerator x plus 3 over denominator x plus 1 end fraction comma text end text text f end text text o end text text r end text text end text 0 less or equal than x less or equal than 2 end cell end table close$ is continuous on [-2,2] then c =

If $text end text f colon left square bracket negative 2 comma 2 right square bracket rightwards arrow R text is end text$ defined by $f left parenthesis x right parenthesis equals open curly brackets table row cell fraction numerator square root of 1 plus c x end root minus square root of 1 minus c x end root over denominator x end fraction comma text end text text f end text text o end text text r end text text end text minus 2 less or equal than x less than 0 end cell row cell fraction numerator x plus 3 over denominator x plus 1 end fraction comma text end text text f end text text o end text text r end text text end text 0 less or equal than x less or equal than 2 end cell end table close$ is continuous on [-2,2] then c =

$L subscript t not stretchy rightwards arrow 2 end subscript fraction numerator vertical line x minus 2 vertical line over denominator x minus 2 end fraction$

$L subscript t not stretchy rightwards arrow 2 end subscript fraction numerator vertical line x minus 2 vertical line over denominator x minus 2 end fraction$

Let $f left parenthesis x right parenthesis equals not stretchy integral fraction numerator x to the power of 2 end exponent d x over denominator left parenthesis 1 plus x to the power of 2 end exponent right parenthesis open parentheses 1 plus square root of 1 plus x to the power of 2 end exponent end root close parentheses end fraction$ and $f left parenthesis 0 right parenthesis equals 0$ , then the value of $f left parenthesis 1 right parenthesis$ be

Let $f left parenthesis x right parenthesis equals not stretchy integral fraction numerator x to the power of 2 end exponent d x over denominator left parenthesis 1 plus x to the power of 2 end exponent right parenthesis open parentheses 1 plus square root of 1 plus x to the power of 2 end exponent end root close parentheses end fraction$ and $f left parenthesis 0 right parenthesis equals 0$ , then the value of $f left parenthesis 1 right parenthesis$ be

parallel

Match correctly the following and choose the correct option

Match correctly the following and choose the correct option

Colloidal sol is :

Colloidal sol is :

chemistry-General

$L t subscript y not stretchy rightwards arrow 0 end subscript fraction numerator sin invisible function application left parenthesis a plus b x right parenthesis minus sin invisible function application left parenthesis a minus b x right parenthesis over denominator x end fraction$

$L t subscript y not stretchy rightwards arrow 0 end subscript fraction numerator sin invisible function application left parenthesis a plus b x right parenthesis minus sin invisible function application left parenthesis a minus b x right parenthesis over denominator x end fraction$

parallel

Colloidal sol is :

Colloidal sol is :

Chemistry-General

In the given circuit, no current is passing through the galvanometer. If the cross sectional diameter of the wire AB is doubled, then for null point of galvanometer, the value of AC would be:

In the given circuit, no current is passing through the galvanometer. If the cross sectional diameter of the wire AB is doubled, then for null point of galvanometer, the value of AC would be:

physics-General

The number of circular division on the shown screw gauge is 50. It moves 0.5 mm on main scale for one complete rotation and main scale has 1/2 mm marks. The diameter of the ball is:

The number of circular division on the shown screw gauge is 50. It moves 0.5 mm on main scale for one complete rotation and main scale has 1/2 mm marks. The diameter of the ball is:

physics-General

parallel

$text Lt end text subscript x plus x over 2 end subscript fraction numerator cos invisible function application x over denominator x minus pi over 2 end fraction$

$text Lt end text subscript x plus x over 2 end subscript fraction numerator cos invisible function application x over denominator x minus pi over 2 end fraction$

The decomposition of $H subscript 2 O subscript 2$ may be checked by adding a small quantity of phosphoric acid. This is an example of :

The decomposition of $H subscript 2 O subscript 2$ may be checked by adding a small quantity of phosphoric acid. This is an example of :

chemistry-General

$L t subscript x not stretchy rightwards arrow 1 end subscript fraction numerator log subscript e superscript x over denominator x minus 1 end fraction$

$L t subscript x not stretchy rightwards arrow 1 end subscript fraction numerator log subscript e superscript x over denominator x minus 1 end fraction$

parallel

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