Physics NEET Daily MCQs Practice Questions | 31 July, 2024

A particle of mass 2 kg is moving along a straight line. Its velocity time graph is as shown in fig. Work done by the resultant of all forces acting on the particle from t = 4 to t = 8s is

Match the column I and column II:

The figure shows three circuits with identical batteries, inductors, and resistors. Rank the circuits, in the decreasing order, according to the current through the battery (i) just after the switch is closed and (ii) a long time later :-

 Identify the logic operation carried out.

A child is standing with folded arms at the center of a platform rotating about its central axis. The kinetic energy of the system is K. Now the child stretches his arms so that moment of inertia of the system becomes four times. The kinetic energy of the system now is:-

Two coherent sources of light interfere. The intensity ratio of two sources is 1 : 4 For this interference pattern, The value of  $\frac{{\mathrm{l}}_{\max }+{\mathrm{l}}_{\min }}{{\mathrm{l}}_{\max }-{\mathrm{l}}_{\min }}$ is:

Which of the following is incorrect statement for a real object ?

 Assertion : I-V characteristic of p-n junction diode is same as that of conductor
Reason : p-n junction diode behave as conductor at room temperature.

Liquid drops of mass m falling slowly one by one from a vertical capillary tube of diameter d. The surface tension of the liquid is :-

At a 10 meter distance from a point charge the electric field is 800V/m at that point the potential is :-

An iron rod of length l and of cross-section area A is heated from 0°C to 100°C. If the rod neither expands nor bends, then the developed F is proportional to :-

In figure, + Q charge is located at one of the face of the cube , then electric flux through cube due to + Q charge is :-

The number of division between Lower fixed point (LFP) & Upper fixed point (UFP) on the two scales X and Y are 80 and 120 respectively. The ice point on both the scales is 0° . If the temperature on the X-scale is 15° , then what is the temperature on the Y-scale :-

Light travels through a glass plate of thickness t and refractive index μ . If c is the speed of light in vacuum, the time taken by light to travel this thickness of glass is:

A open knife edge of mass M is dropped from a height ‘h’ on a wooden floor. If the blade penetrates a distance ‘S’ into the wood, average resistive force offered by the wood to the blade is

A wave travelling along the x-axis is described by the equation y (x, t) = 0.01 cos ( αx - βt) . If the wavelength and the time period of the wave are 0.1m and 4.0 s respectively then value of α and β in appropriate units are

Potential difference across the terminals of the battery shown in figure is :- (r = internal resistance of battery)

Two Statements are given below:

Statement - I Formula  ${\mathrm{S}}_{\mathrm{nth}}=\mathrm{u}+\frac{\mathrm{a}}{2}\left(2\mathrm{n}-1\right)$ is dimensionally wrong.
Statement - II Astronomical unit of Length is greater than paralletic second.

In the light of the above statements, choose the most appropriate answer from the options given below :

Two Statements are given below:

Statement - I Moving charges does not produce magnetic field in the surrounding space.
Statement - II Mutual inductance of a pair of coils does not depend upon their relative orientation.

In the light of the above statements, choose the most appropriate answer from the options given below :

Two identical piano wires, kept under the same tension T have a fundamental frequency of 1200 Hz. The fractional increase in the tension of one of the wires which will lead to occurence of 12 beats/s when both the wires oscillate together would be :