CUET (UG) entrance exam Question Bank Solutions for Physics

A convex lens with radii of curvature R₁ = R₂ is immersed in water. Assuming that the refractive indices of glass and water are 3/2 and 4/3 respectively, its focal length f₁ in comparison to that in air, f, is ______.

A gas occupies a volume of 800 cm³ at a pressure of 76 cm of mercury. If the pressure is increased to 80 cm of mercury at the same temperature, the volume of the gas would now be ______.

A series LCR circuit contains inductance 5 mH, capacitance 2µF and resistance ion. If a frequency A.C. source is varied, what is the frequency at which maximum power is dissipated?

The resonant frequency of a RF oscillator is 1 MHz and its bandwidth is 10 kHz. The quality factor will be :

To reduce the resonant frequency in an LCR series circuit with a generator

Five cells each of emf E and internal resistance r send the same amount of current through an external resistance R whether the cells are connected in parallel or in series. Then the ratio `("R"/"r")` is:

In series LCR AC-circuit, the phase angle between current and voltage is

The phase diffⁿ b/w the current and voltage at resonance is

In an LCR circuit having L = 8 henery. C = 0.5 µF and R = 100 ohm in series, the resonance frequency in radian/sec is

In the nuclear reaction 92 V²³⁸ `->` Z^ThA + 2He⁴ the value of A and Z are

In the following nuclear reaction

`""^6C_n -> 5^(13^11) + 13^+ + x`

The current sensitivity of a galvanometer increase by 20%. If its resistance also increases by 25%, the voltage sensitivity will ______.

A galvanometer of resistance 100 Ω gives a full-scale deflection for a current of 10⁻⁵ A. To convert it into an ammeter capable of measuring up to 1 A we should connect a resistance of ______.

A galvanometer having a coil resistance of 60 Ω shows full-scale deflection when a current of 1.0 amp passes through it. It can be converted into an ammeter to read currents up to 5.0 amp by:

In the circuit in figure the potential difference across P and Q will be nearest to

In an ammeter 0.5% of main current passes through galvanometer; If resistance of galvanometer is G, the resistance of ammeter will be.

Two sources of equal e.m.f are connected to an external resistance R in series. The internal resistance of the two sources are R₁ and R₂ (R₂ > R₁) If the potential difference across the source having internal. resistance R₂ is zero, then ______.

A square loop and a circular loop are formed from the same wire and the same current is passed through them. The ratio of their dipole moments is ______.

Two metal wires of identical dimensions are connected in parallel. If σ₁ and σ₂ are the conductivities of the metal wires respectively, the effective conductivity of the combination is

The force 'F' acting on a particle of mass 'm' is indicated by the force-time graph shown below. The change in momentum of the particle over the time interval from zero to 8s is: