Trajectories of two projectiles are shown in figure. Let $T subscript 1 end subscript$ and $T subscript 2 end subscript$ be the time periods and $u subscript 1 end subscript$ and $u subscript 2 blank end subscript$ their speeds of projection. Then

Maths-

The equation of the circumcircle of the triangle formed by the lines $y plus square root of 3 x equals 6 comma y minus square root of 3 x equals 6$ and y=0 is

Maths-General

Which of the substance $A comma blank B$ or $C$ has the highest specific heat? The temperature $v s$ time graph is shown

The figure shows a system of two concentric spheres of radii $r subscript 1 end subscript$ and $r subscript 2 end subscript$ and kept at temperatures $T subscript 1 end subscript$ and $T subscript 2 end subscript$ respectively. The radial rate of flow of heat in a substance between the two concentric spheres, is proportional to

maths-

If the line y = x + 3 meets the circle $x squared plus y squared equals a squared$ at A and B, then equation of the circle on AB as diameter is

maths-General

An electric lamp is fixed at the ceiling of a circular tunnel as shown is figure. What is the ratio the intensities of light at base A and a point B on the wall

The distance between a point source of light and a screen which is 60 cm is increased to 180 cm. The intensity on the screen as compared with the original intensity will be

Maths-

The pole of the straight line 9x + y – 28 = 0 with respect to the circle $2 x squared plus 2 y squared minus 3 x plus 5 y minus 7 equals 0$ is

Pole and polar are one of the important parts of the circle, many questions can be based on these parts. It should be remembered that while writing the equation of polar for a pole, the coefficients of square terms in the equation of the circle is one. If the equation of the circle does not have coefficients as one, then make it one before solving the question.

The pole of the straight line 9x + y – 28 = 0 with respect to the circle $2 x squared plus 2 y squared minus 3 x plus 5 y minus 7 equals 0$ is

Maths-General

Three rods of equal length $l$ are joined to form an equilateral triangle $P Q R.$ O is the mid point of $P Q.$ Distance $O R$ remains same for small change in temperature. Coefficient of linear expansion for $P R$ and $R Q$ is same, $i. e. comma blank alpha subscript 2 end subscript$ but that for $P Q$ is $alpha subscript 1 end subscript.$ Then

A point source causes photoelectric effect from a small metal plate Which of the following curves may represent the saturation photocurrent as a function of the distance between the source and the metal?

One of the following figures respesents the variation of particle momentum with associated de Broglie wavelength
a)
b)
c)

Two circular discs A and B with equal radii are blackened. They are heated to some temperature and are cooled under identical conditions. What inference do you draw from their cooling curves?

Which of the curves in figure represents the relation between Celsius and Fahrenheit temperatures

Maths-

The area of circle centred at (1, 2) and passing through (4, 6) is

The area of a circle is the space occupied by the circle in a two-dimensional plane. Area of circle = πr² (π = 22/7).

The area of circle centred at (1, 2) and passing through (4, 6) is

Maths-General

The area of a circle is the space occupied by the circle in a two-dimensional plane. Area of circle = πr² (π = 22/7).

Three rods of same dimensions are arranged as shown in figure. They have thermal conductivities $K subscript 1 end subscript comma K subscript 2 end subscript$ and $K subscript 3 end subscript$ . The points $P$ and $Q$ are maintained at different temperatures for the heat to flow at the same rate along $P R Q$ and $P Q$ then which of the following options is correct