MAH-MHT CET (PCM/PCB) entrance exam Question Bank Solutions for Physics

A uniform metal rod is used as a bar pendulum. If the room temperature rises by 10°C and coefficient of linear expansion of the metal of the rod is 2 × 10⁶ °C^-1, the period of pendulum will increased by ______.

Let force F = A sin(Ct) + B cos(Dx), where x and t are displacement and time, respectively. The dimensions of `"C"/"D"` are same as dimensions of

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

A circular coil has 150 turns and a mean diameter of 20 cm. It carries a current of 10 A. What is the strength of the magnetic field at a point on its axis at a distance of 5 m from the centre of the coil?

A light emitting diode is ______

A charge q moves with velocity v through electric field E as well as magnetic field (B). Then, the force acting on it is ____________.

A moving body is covering distances which are proportional to square of the time. Then, the acceleration of the body is ____________.

The range of a projectile, when launched at an angle of 30° with the horizontal is 2 km. What is the range of the projectile, when launched at an angle of 45° with the horizontal?

When a particle carrying a charge of 100 µC moves at an angle of 30° to a uniform magnetic field of induction 6 x 10^-5 Wb/m² with a speed of 2 x 10⁵ m/s. The force acting on the particle is ______

Two circular loop A and B of radii Rand NR respectively are made from a uniform wire. Moment of inertia of B about its axis is 3 times that of A about its axis. The value of N is ______.

A solar cell is based on the principle of ______

The equiconvex lens has a focal length 'f'. If the lens is cut along the line perpendicular to the principal axis and passing through the pole, what will be the focal length of any half part?

A scooter going towards east at 20 ms^-1 turns right through an angle of 90°. lf the speed of the scooter remains unchanged in taking turn, the change in the velocity of the scooter is ____________.

The maximum and minimum tensions in the string whirling in a circle of radius 2.5 m with constant velocity are in the ratio 5 : 3. Then its velocity is ____________.

The speed of swimmer in still water is 10 m/s. The speed of river water is 5 m/s and is flowing due east. If he is standing on the south bank and wishes to cross the river along the shortest path, the angle at which he should make his strokes w.r.t. north is given by: ____________.

An electric current has both D.C. and A.C. components. D.C. component of 8 A and A.C. component is given as I = 6 sin`omega`t A. So I_rms value of resultant current is ______.

A circular coil carrying current 'I' has radius 'R' and magnetic field at the centre is 'B'. At what distance from the centre along the axis of the same coil, the magnetic field will be `"B"/64`?

An `alpha` - particle of energy 5 MeV is scattered through 180° by gold nucleus. The distance of closest approach is of the order of ______.

Consider a uniform semicircular wire of mass M and radius R as shown in the figure. Its M.I. about an axis ZZ' is ____________.

A particle is given an initial speed u inside a smooth spherical shell of radius R = 1 m so that it is just able to complete the circle. Acceleration of the particle when it is in vertical circle is ____________.