List of top Physics Questions

A car accelerate from it's Stationary position for 8 seconds and travels a distance of 280m. According to the mean value theorem, the speedometer at a certain time during accelaration must read exactly.

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 :

The Lissajous figure may be a straight line if the phase difference is

A truck moving at a constant speed of 72 km/h enters a curved path of radius of curvature measuring 120 m. It's total acceleration 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?

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

In single pulse modulation of PWM inverter, third harmonic can be eliminated if pulse width is equal to

A moving coil ammeter having resistance of 10 ohm gives full scale. detection when current of 5 mA passed through it. The resistance to be connected to make the instrument to read up to 1 A is__

The transfer function for the diagram shown below is given by____

The transfer function

If the stream function equation y=3x²-y², what is the magnitude of velocity at point (2.2)?

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:

A white dwarf star has volume V and contains N electrons so that the density of electron is \(n=\frac{N}{V}\). Taking the temperature of the star to be 0 K, what will be the expression for average energy per electron in the star?

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:

Match List I with List II

LIST I		LIST II
A	Damper Winding	I	To improvement the power factor
B	Laminated steel	II	To reduce the starch current
C	Auto transformer starters	III	Prevent hunting
D	synchronous condenser	Iv	Reduce eddy current loss

Choose the correct answer from the options given below:

C₁ and C₂ represent the specific heat of a liquid and its saturated vapour where- as L is latent heat of vaporization. (T is the temperature) The correct option is

Human ear normally hears sounds originating from the vibrating objects with a frequency between

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

In terms of total primary energy consumption. At present India stands at what position?

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

The radius of Mohr's circle of stress of a stressed element is 30 N/mm² and minor principal tensile stress is 15 N/mm². The major principal stress is:

Match List I with List II

LIST I (Type of Device)		LIST II (Characteristics/ Application)
A	GTO	I	Triggering Circuit
B	UJT	II	Turn off by negative pulse rate
C	TRIAC	III	High Speed Switching
D	MOSFET	IV	Bidirectional Switching

Choose the correct answer from the options given below:

When bullet is fired from a gun, its potential energy is converted into ____ .

The digital circuit shown in below represents:

The digital circuit shown in below

Choose the correct statements.
A. In CSI input current is Variable.
B. CSI requires feedback diodes.
C. Both controlled and uncontrolled switches are used in CSI.
D. CSI does not require filters.
E. CSI circuit requires large inductance.
Choose the correct answer from the options given below:

The unit vectors orthogonal to the vector\(-\hat{i}+2\hat{j}+2\hat{k}\) and making equal angles with the x and y axis is (are)