Physics-
General
Easy

Question

A 60 watt bulb is hung over the center of a table 4 m cross times 4 m at a height of 3 m. The ratio of the intensities of illumination at a point on the centre of the edge and on the corner of the table is

  1. left parenthesis 17 divided by 13 right parenthesis to the power of 3 divided by 2 end exponent    
  2. 2/1    
  3. 17/13    
  4. 5/4    

The correct answer is: left parenthesis 17 divided by 13 right parenthesis to the power of 3 divided by 2 end exponent

Related Questions to study

General
maths-

If f(x) is a polynomial of degree five with leading coefficient one such that  f(1)=12,f(2)=22,f(3)=32,f(4)=42,f(5)=52 then

If f(x) is a polynomial of degree five with leading coefficient one such that  f(1)=12,f(2)=22,f(3)=32,f(4)=42,f(5)=52 then

maths-General
General
maths-

If f(x) = ax2+ bx + c such that f(p) + f(q) = 0 where anot equal to0 ; p , qelement ofR then number of real roots of equation f(x) = 0in interval [p, q] is

If f(x) = ax2+ bx + c such that f(p) + f(q) = 0 where anot equal to0 ; p , qelement ofR then number of real roots of equation f(x) = 0in interval [p, q] is

maths-General
General
maths-

If f(x) is a differentiable function satisfying f(x+ y)= f(x)f(y) straight for all x, y element of R and f'(0)=2 then f(x)=

If f(x) is a differentiable function satisfying f(x+ y)= f(x)f(y) straight for all x, y element of R and f'(0)=2 then f(x)=

maths-General
parallel
General
physics-

Maximum kinetic energy (Ek ) of a photoelectron varies with the frequency ( v ) of the incident radiation as

Maximum kinetic energy (Ek ) of a photoelectron varies with the frequency ( v ) of the incident radiation as

physics-General
General
maths-

The degree of the differential equation satisfying square root of 1 plus x squared end root plus square root of 1 plus y squared end root equals A open parentheses x square root of 1 plus y squared end root minus y square root of 1 plus x squared end root close parentheses is

The degree of the differential equation satisfying square root of 1 plus x squared end root plus square root of 1 plus y squared end root equals A open parentheses x square root of 1 plus y squared end root minus y square root of 1 plus x squared end root close parentheses is

maths-General
General
Maths-

If x fraction numerator d y over denominator d x end fraction equals y left parenthesis log space y minus log space x plus 1 right parenthesis then the solution of the equation is :

If x fraction numerator d y over denominator d x end fraction equals y left parenthesis log space y minus log space x plus 1 right parenthesis then the solution of the equation is :

Maths-General
parallel
General
physics-

A simple magnifying lens is used in such a way that an image is formed at 25 cm away from the eye. In order to have 10 times magnification, the focal length of the lens should be

A simple magnifying lens is used in such a way that an image is formed at 25 cm away from the eye. In order to have 10 times magnification, the focal length of the lens should be

physics-General
General
Maths-

The differential equation of all circles which pass through the origin and whose centres lie on y-axis is

The differential equation of all circles which pass through the origin and whose centres lie on y-axis is

Maths-General
General
maths-

Let p, qelement of{1,2,3,4}.Then number of equation of the form px2+qx+1=0,having real roots ,is

Let p, qelement of{1,2,3,4}.Then number of equation of the form px2+qx+1=0,having real roots ,is

maths-General
parallel
General
maths-

Number of values of 'p' for which the equationopen parentheses p squared minus 3 p plus 2 close parentheses x squared minus open parentheses p squared minus 5 p plus 4 close parentheses x plus p minus p squared equals 0 possess more  than two roots ,is:

Number of values of 'p' for which the equationopen parentheses p squared minus 3 p plus 2 close parentheses x squared minus open parentheses p squared minus 5 p plus 4 close parentheses x plus p minus p squared equals 0 possess more  than two roots ,is:

maths-General
General
maths-

Statement-1- The number blank to the power of 1000 end exponent C subscript 500 end subscript is not divisible by 11.Because
Statement-2- If p is a prime, the exponent of p in n! is open square brackets fraction numerator n over denominator p end fraction close square brackets+ open square brackets fraction numerator n over denominator p to the power of 2 end exponent end fraction close square brackets+ open square brackets fraction numerator n over denominator p to the power of 3 end exponent end fraction close square brackets+……Where [x] denotes the greatest integer less or equal than x.

Statement-1- The number blank to the power of 1000 end exponent C subscript 500 end subscript is not divisible by 11.Because
Statement-2- If p is a prime, the exponent of p in n! is open square brackets fraction numerator n over denominator p end fraction close square brackets+ open square brackets fraction numerator n over denominator p to the power of 2 end exponent end fraction close square brackets+ open square brackets fraction numerator n over denominator p to the power of 3 end exponent end fraction close square brackets+……Where [x] denotes the greatest integer less or equal than x.

maths-General
General
physics-

According to Newton’s law of cooling, the rate of cooling is proportional to open parentheses increment theta close parentheses to the power of n end exponent, where increment theta is the temperature differences between the body and the surroundings andn is equal to

According to Newton’s law of cooling, the rate of cooling is proportional to open parentheses increment theta close parentheses to the power of n end exponent, where increment theta is the temperature differences between the body and the surroundings andn is equal to

physics-General
parallel
General
Maths-

text  If  end text y equals e to the power of 4 x end exponent plus 2 e to the power of negative x end exponent satisfies the relation fraction numerator d cubed y over denominator d x cubed end fraction plus A fraction numerator d y over denominator d x end fraction plus B y equals 0 then value of A and B respectively are:

text  If  end text y equals e to the power of 4 x end exponent plus 2 e to the power of negative x end exponent satisfies the relation fraction numerator d cubed y over denominator d x cubed end fraction plus A fraction numerator d y over denominator d x end fraction plus B y equals 0 then value of A and B respectively are:

Maths-General
General
physics-

Radius of a conductor increases uniformly from left end to right end as shown in fig  Material of the conductor is isotropic and its curved surface is thermally insulated from surrounding. Its ends are maintained at temperatures T subscript 1 end subscript and T subscript 2 end subscript left parenthesis T subscript 1 end subscript greater than T subscript 2 end subscript right parenthesis: If, in steady state, heat flow rate is equal to H, then which of the following graphs is correct

Radius of a conductor increases uniformly from left end to right end as shown in fig  Material of the conductor is isotropic and its curved surface is thermally insulated from surrounding. Its ends are maintained at temperatures T subscript 1 end subscript and T subscript 2 end subscript left parenthesis T subscript 1 end subscript greater than T subscript 2 end subscript right parenthesis: If, in steady state, heat flow rate is equal to H, then which of the following graphs is correct

physics-General
General
physics-

Water and turpentine oil (specific heat less than that of water) are both heated to same temperature. Equal amounts of these placed in identical calorimeters are then left in air

Water and turpentine oil (specific heat less than that of water) are both heated to same temperature. Equal amounts of these placed in identical calorimeters are then left in air

physics-General
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.