List of top Physics Questions

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:

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:

If a, b, c, d are in Harmonic progression then
(A) a+d>b+c
(B) a+c=b+d
(C) ad > bc
(D) aⁿ +cⁿ>26ⁿ
(E) a+d<b+c
Choose the correct answer from the options given below :

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:

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

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.

The true length of a line is known to be 200m. When this is measured with a 20m tape, the length is 200.80m. The correct length of the 20m tape 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:

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

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.

Consider an inertial frame S' moving at a speed \(\frac{c}{3}\) away from another inertial frame S along the common x-axis, where c is the speed of light. As observed from S', a particle is moving with speed \(\frac{c}{3}\) in the y' direction as shown in the figure. The speed of the particle as seen from S will be

Given below are two statements:
Statement-I : Law of conservation of momentum is invariant to Galilean transformation.
Statement-II Law of conservation of energy is invariant to Galilean transformation.
In the light of the above statements, choose the correct answer from the options given 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:

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____

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]

The moment of the couple formed by the forces \(5\hat{i}+\hat{k}\) and \(-5\hat{i}-\hat{k}\) acting at the points (9, -1, 2) and (3, -2, 1) respectively, is

In Force current analogy, stiffness constant K is analogous to__

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

Angular width of central maxima of a diffraction pattern of a single slit does not depend upon

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

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

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

Given below are two statements:
Statement - I: The formula of correct length is \(\frac{\text{Measure of length}}{\text{Nominal length of Tape}}\) × Actual length of tape.
Statement - II: The formula of sag correction is - \(\frac{-W^2}{24P^2}\times L\).
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