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

If universal gas constant is 8.3 joule/mole-Kand the Avogadro's number is 6 x 10²³, then mean kinetic energy of the oxygen molecules at 427 °C will be ______.

A thin mica sheet of thickness 4 x 10^-6 m and refractive index 1.5 is introduced in the path of the first wave. The wavelength of the wave used is 5000 A. The central bright maximum will shift ______.

In a Young's experiment, two coherent sources are placed 0.60 mm apart and the fringes are observed one metre away. If it produces the second dark fringe at a distance of 1 mm from the central fringe, the wavelength of monochromatic light used would be ____________.

A circular coil having N turns and radius r carries a current I. It is held in the XZ plane in a magnetic field B `hat"i".` The torque on the coil due to the magnetic field is: ____________.

An open organ pipe produces its fundamental frequency f. When the pipe is dipped in water so that `2/5` of its length is under water, then its 5 fundamental frequency becomes ____________.

In Young's double-slit experiment, an interference pattern is obtained on a screen by a light of wavelength 4000 Å, coming from the coherent sources S₁ and S₂ At certain point P on the screen, third dark fringe is formed. Then the path difference S₁P - S₂P in microns is ______.

In Young's double slit experiment with a source of light of wavelength 5860 Å, the first maxima will occur when ____________.

A pipe closed at one end produces a fundamental note of 412 Hz. It is cut into two pieces of equal length. The fundamental notes produced by the two pieces are ____________

At which temperature the speed of sound in hydrogen will be same as that of speed of sound in oxygen at 47° C?

An open pipe of certain length produces fundamental frequency f₁. A closed pipe of some other length produces fundamental .frequency f₂. When the two are joined to form a longer close tube, its fundamental frequency will be ____________.

A cyclist with combined mass 80 kg goes around a curved road with a uniform speed 20 m/s. He has to bend inward by an angle `theta` = tan^-1 (0.50) with the vertical. The force of friction acting at the point of contact of tyres and road surface is______.

[g = 10 m/s2 ]

In Young's double slit experiment, the two slits act as coherent sources of equal amplitude A and wavelength `lambda`. In another experiment with the same set up the two slits are of equal amplitude A and wavelength `lambda`. but are incoherent. The ratio of the intensity of light at the mid-point of the screen in the first case to that in the second case is ____________.

A pipe open at both ends and a pipe closed at one end have same length. The ratio of frequencies of their p^th overtone is ______.

The fundamental frequency of sonometer wire increases by 9 Hz, if its tension is increased by 69%, keeping the length constant. The frequency of the wire is ______.

Which of the following transition will have highest emission wavelength?

A circular coil and a square coil is prepared from two Identical metal wires and a current is passed through it. Ratio of magnetic dipole moment associated with circular coil to that of square coil is ______.

In Young's double slit experiment fifth dark fringe is formed opposite to one of the slits. If D is the distance between the slits and the screen and d is the separation between the slits, then the wavelength of light used is ______.

The maximum safe speed, for which a banked road is intended, is to be increased by 20 %. If the angle of banking is not changed, then the radius of curvature of the road should be changed from 30 m to ____________.

In Young's double slit experiment the source is white light. One slit is covered with red filter and the other with blue filter. There shall be ____________.

The phenomenon of interference is based on ______.