List of top Physics Questions

What is the simplified form of Boolean expression represented by Q in the following circuit?

If three forces acting on a rigid body are in equilibrium, then they must:

If \(I_0\) is the intensity of the principal maxima in a single slit diffraction pattern, then what will be its intensity when the slit width is doubled?

Figure shows Fraunhofer's diffraction due to a single slit. If first minima is obtained in the direction shown, then the path difference between ray 1 and ray 3 is

A metal has work function \(w_0\) = 3.3×10^-19 J. What should be the minimum frequency of the incident radiation that can remove an electron from the metal surface? [Given h = 6.6x10^-34 J-s]

What will be the separation between the coherent sources formed by a bi-prism whose inclined faces makes an angle of 2° with its base, the slit source being 0.10 m away from the bi-prism (Given μ = 1.5)?

Soap bubble attains spherical shape due to

Theory of errors and adjustments deals with minimizing the effects of.

A. Pyranometer measures global solar radiation received from entire hemisphere on a horizontal surface.
B. Solarimeter can be interpreted to mean same as pyrheliometeric instrument.
C. Pyranometer produces a voltage as a function of the incident solar radiation.
D. Pyranometer uses photovoltaic detectors.
E. Pyranometre's spectral response is linear.
Choose the correct answer from the options given below:

A truss ABC loaded at B with a force of 10 kN as shown in the figure. The force in the member AC is:

The side of a square land was measured as 150m and is in error by 0.05m. What is the corresponding error in the computed area of the land?

Which methods you will prefer to estimate best the area of an irregular and curved boundary ?

If \(\hat{n_1}, \hat{n_2}\)are two unit vectors and \(\theta\) is the angle between them, then \(\cos\frac{\theta}{2}\) is equal to

Which of the following statements is/ an false?
(A) Solder is an alloy of tin and lead.
(B) Ductile materials result in continuous chip with Built up edge.
(C) Stellites are alloys of cobalt, chromium and vanadium.
(D) Electron beam machining does not require vaccum.
(E) In Plasma arc maching, MRR [Material Removal Rate] is higher then EDM and laser machining.
Choose the correct answer from the options given below:

Give below are two statements:
Statement - I : The pressure on the base of a liquid column will depend upon the shape of the column.
Statement - II: The pressure over the free surface of a fluid at rest will vary with the location.
In the light of the above statements, choose the correct answer from the options given below :

Given \(\overrightarrow A\)x \(\overrightarrow B\) = \(\overrightarrow C\),
Where \(\overrightarrow A = x\hat i+y\hat j+3\hat k\), \(\overrightarrow B = y\hat î + x\hat j + 2\hat k\), \(\overrightarrow C=-5\hat î+5\hat k\) 
Find the value of x and y

If you want to retain the first 4 bits of given string of 8 bits and complement the last 4 bits then the correct mask and the operation should be

If W is weight of the chain, L is span and P is tension or pull, then sag correction for chain line will be.

Match List I with List II

LIST I		LIST II
A	Voltage Stability	I	Power system stabilizer
B	Transient stability	II	Damping Power
C	Oscillatory instability	III	Angle stability
D	Study-state dynamics	IV	Reactive power

Choose the correct answer from the options given below:

Find the output voltage of a non-inverting OP-AMP having \(R_1\) = 100 kΩ, \(R_f\) = 500 kΩ, when the input signal is of 2.0 V.

A 100 uF capacitor (C1) is initially charged to accumulate 150 μC. One unchanged capacitor (C2) 350 μF is parallelly connected to first one. In steady state, C1 will have

Match List I with List II

LIST I (Characteristic Equation)		LIST II (Nature of Output)
A	\(S^2+18S+64\)	I	Underdamped
B	\(S^2+25\)	II	Critically damped
C	\(S^2+12S+36\)	III	Undamped
D	\(S^2+8S+25\)	IV	Overdamped

Choose the correct answer from the options given below:

If two simple harmonic motions having angular frequency 440 rad/s and 396 rad/s are superimposed, what will be the number of beats produced?

Choose the incorrect statement about Atomic absorption spectrometer:

What is the change in entropy when 10 g of ice at 0 °C is converted into water at the same temperature? The latent heat of ice is 80 cal/g.