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

The fundamental frequency of a string stretched with a weight 'M' kg is 'n' hertz. Keeping the vibrating length constant, the weight required to produce its octave is ______.

A parallel combination of pure inductor and capacitor is connected across a source of alternating e.m.f. 'e'. The currents flowing through an inductor and capacitor are i_L and i_C respectively. In this parallel resonant circuit, the condition for currents i, i_L and i_C is (i = net r.m.s. current in the circuit)

Out of the following graphs which graph shows the correct relation for LC parallel resonant circuit?

Which one of the following is NOT the correct formula for refractive index of glass w.r.t. air (_aμ_g) (i = angle of incidence, r = angle of refraction)

In rejector circuit, above resonant frequency the circuit is ____________.

Two protons are kept at a separation of 10 nm. Let F_n and F_e be the nuclear force and the electromagnetic force between them ____________.

The radius of germanium (Ge) nuclide is measured to be twice the radius of  `""^9""_4"Be"`. The number of nucleons in Ge will be ____________.

In series resonant circuit, at resonance, ____________.

Three identical charges are placed on three vertices of a square. If the force acting between q₁ and q₂ is F₁₂ and between q₁ and q₃ is f₁₃ then `"F"_13/"F"_12` = ____________.

For total internal reflection to take place, the angle of inddence i and the refractive index µ of the medium must satisfy the inequality ____________.

A coil of 16 mH and a capacitor of 10 µF are in series with an A.C source along with 5 `Omega` resistances. If inductive reactance is equal to capacitive reactance, then the angular frequency (in rad/s) of source is ____________.

The angle of minimum deviation produced by a thin glass prism in air is 'δ'. If that prism is immersed in water, the angle of minimum deviation will be ______.

( _aμ_g = refractive index of glass w.r.t, air _aμ_w = refractive index of water w.r.t. air)

For a ray of light, the critical angle is minimum when it travels from ______.

In the sonometer experiment, the string of length 'L' under tension vibrates in the second overtone between the two bridges. The amplitude of vibration is maximum at ______

A sonometer wire of length 'ℓ₁' is in resonance with a frequency of 250 Hz. If the length of the wire is increased to 'ℓ₂', then 2 beats per second are heard. The ratio of lengths `ℓ_1/ℓ_2` of wire will be ______ 

The resonant frequency of a series LCR circuit is 'f'. The circuit is now connected to the sinusoidally alternating e.m.f of frequency '2f'. The new reactance X'_L and X'_C are related as ____________.

If radius of the `{:(27),(13):}` Al nucleus is taken to be R_AI then the radius of `{:(125), (53):}` Te nucleus is ____________.

A sample of radioactive element contains 8 × 10¹⁶ active nuclei. The half-life of the element is 15 days. The number of nuclei decayed after 60 days is ______.

Let a force `vec"F"=-"F"hat"k"` acts on the origin of Cartesian frame of reference. The moment of force about a point (1, -1) will be ______.

An a.c. source of variable frequency 'f' is connected to an LCR series circuit. Which one of the graphs represent the variation of current 'I' in the circuit with frequency 'f'?