List of top Physics Questions

When the water surface coincides the top edge of a rectangular vertical 40m (wide) x 3m (deep), then the depth of center of pressure is.

When the speed becomes more than the synchronous speed during hunting, the damper bars develop___

Given below are two statements :
Statements-I : Important characteristic of electromagnetic wave is that it can transport energy from one point to another point.
Statements-II : The direction of electromagnetic wave at a given point is the direction in which energy is being transmitted.
In the light of the above statements, choose the correct answer from the options given below.

Operational amplifiers can be used as
A. Summing circuit
B. Voltage regulator
C. Integrator
D. Differentiator
E. Clipping Circuit
Choose the correct answer from the options given below.

The COP of a heat pump is 40% of a reversible heat pump. The operating temperatures limits are \(2°C\) and \(25°C\). If 2.5 kW of heat is pumped by the heat pump in a room to be heated, then the power input to the heat pump is:

The relative magnitude of \(\overrightarrow H\) in a plane wave is 1 \(Am^{-1}\). What will be the magnitude of \(\overrightarrow E\) for a plane wave in free space?

The expression for hoop stress/circumferential stress (F1) generated in the material of thin cylinder due to internal pressure of fluid (P) is given by:
Where t = thickness of the wall of cylinder
d = internal diameter of cylinder

Head lost due to friction is 7 m in a pipe flow. The total head at the inlet of the pipe to be maintained for maximum power transmission through the pipe is:

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: The gradient of velocity at right angles to the flow is called the shear rate.
Reason R: Shear rate is also known as velocity gradient or strain raste.
In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements:
Statement I: A series RLC circuit is said to be in resonance when current delivered by the source is in phase with the source voltage.
Statement II: Power factor of a series RLC is zero, if circuit is in resonance condition.
In the light of the above statements, choose the correct answer from the options given below:

The following logic circuit represents

A voltage of 100 V dc is applied across two capacitors in series having capacitances C1 = 200 μF and C2 = 20 uF. A voltage drop across C1 is given as

In an actual regenerative Rankine cycle, the net work out put will be _____ as compared to simple Ranking cycle.

Match List I with List II

List I		List II
A.	Temperature correction (Ct)	I.	\(\frac{(P_m-P_o)L}{AE}\)
B.	Puel correction (Cp)	II.	\(\frac{h^2}{2L}\)
C.	Slope correction (Ch)	III.	\(\alpha(T_m-T_o)L\)
D.	Sag correction (Cs)	IV.	\(\frac{LW^2}{24n^2P_m^2}\)

Choose the correct answer from the options given below :

What will be the range of input voltage \(V_i\) in which the Zener diode shown in the figure below, conducts?

Match List I with List II

List I		List II
A.	Auto collimator	I	Angular dimension
B.	Bevel Protractor	II	Small angular displacement
C.	Optical micrometre	III	Linear dimensions
D.	Vernier Callipers	IV	Surface roughness

Choose the correct answer from the options given below:

Match List I with List II

Choose the correct answer from the options given below:

If magnetic monopole existed, then which of the following Maxwell's equations will be modified?

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

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

What would be the approximate kinetic energy of a piece of rock, weighing 1 kg, just before it hits the earth's surface from a height of 20 meters ?

What is the kinetic energy of an electron in the lowest energy level of a hydrogen atom?

Given below are two statements:
Statement I: Kinetic energy of the wind is proportional to (velocity).
Statement II: Kinetic energy of the wind is proportional to area of sweep of wind turbine and also on Air density.
In the light of the above statements, choose the most appropriate answer from the options given below:

Which section of research proposal provides background information and a critique of previous research done on the topic?

Consider the correct statements in respect of the thermoelectric instruments. The correct sequence is:
A. They indicate the rms value of current or voltage
B. They suffer from waveforms errors
C. They can be used for frequency range of the order of MHz
D. They have a low overload capacity
E. They have a high accuracy
Choose the correct answer from the options given below: