List of top Questions asked in MHT CET

A spherical rubber balloon carries a charge, uniformly distributed over the surface. As the balloon is blown up and increases in size, the total electric flux coming out of the surface

A transistor has a voltage gain \( A \). If the amount \( \beta A \) of its output is applied to the input of the transistor, then the transistor becomes oscillator when

An \( \alpha \) particle of energy 10 eV is moving in a circular path in a uniform magnetic field. The energy of proton moving in the same path and same magnetic field will be [mass of \( \alpha \) particle = 4 times mass of proton]

Which of the following instruments is \textit{NOT} a direct reading instrument?

A simple pendulum of length \( \ell \) has a bob of mass \( m \). It executes S.H.M. of small amplitude \( A \). The maximum tension in the string is

The magnetic susceptibility of a paramagnetic material at \( -73^\circ \text{C} \) is \( 0.0075 \). Its value at \( -173^\circ \text{C} \) will be

The graph of kinetic energy against the frequency \( v \) of incident light is as shown in the figure. The slope of the graph and intercept on X-axis respectively are

Two spherical black bodies of radius \( r_1 \) and \( r_2 \) with surface temperature \( T_1 \) and \( T_2 \) respectively, radiate the same power, then \( \frac{r_1}{r_2} \) is

When wavelength of light used in optical instruments A and B are 4500Å and 6000Å respectively, the ratio of resolving power of A to B will be

The light of wavelength \( \lambda \) incident on the surface of metal having work function \( \phi \) emits the electrons. The maximum velocity of electrons emitted is

The ratio of radii of gyration of a ring to a disc (both circular of same radii and mass), about a tangential axis perpendicular to the plane is

The work done in blowing a soap bubble of radius \( R \) is \( W \). The work done in blowing a bubble of radius \( 2R \) of the same soap solution is

A thin uniform rod has mass \( M \) and length \( L \). The moment of inertia about an axis perpendicular to it and passing through the point at a distance \( \frac{L}{3} \) from one of its ends, will be

Two wires A and B are stretched by the same load. The radius of wire A is double the radius of wire B. The stress on the wire B as compared to the stress on the wire A is

The Cartesian coordinates of the point on the parabola \[ y^2 = x \quad \text{whose parameter is} \quad \frac{-4}{3} \] are

The approximate value of the function \[ f(x) = x^3 - 3x + 5 \quad \text{at} \quad x = 1.99 \] is

The equation of the tangent at \( P(-4, -4) \) on the curve \[ x^2 = -4y \] is

The angle between the line \[ \mathbf{r} = (i + j + k) + \lambda (3i + j + 3k) \] and the plane \[ \mathbf{r} \cdot (i + 2j + 3k) = 8 \] is

If \[ \frac{x}{\sqrt{1 + x^2}} + \frac{y}{\sqrt{1 + y^2}} = 0, \quad x \neq y, \text{ then } (1 + x^2)^2 \frac{dy}{dx} = \]

If \( (a, -2a), \, a>0 \) is the midpoint of a line segment intercepted between the co-ordinate axes, then the equation of the line is

The sum of the cofactors of the elements of the second row of the matrix \[ \begin{pmatrix} 1 & 3 & 3 & 2 \\ -2 & 0 & 4 & 1 \\ 5 & 2 & 1 & 1 \end{pmatrix} \] is

The direction cosines of a line which is perpendicular to lines whose direction ratios are \( 3, -2, 4 \) and \( 1, 3, -2 \) are

In a triangle \( ABC \) with usual notations, if \( \frac{\cos A}{a} = \frac{\cos B}{b} = \frac{\cos C}{c} \), then the area of triangle \( ABC \) with \( a = \sqrt{6} \) is

Which among the following type of linkages is present in cellulose?

A solution has an osmotic pressure of \( x \) kPa at 300K having 1 mole of solute in \( 10^{-5} \, \text{m}^3 \) of solution. If its osmotic pressure is reduced to \( \frac{1}{10} \) of its initial value, what is the new volume of solution?