List of top Physics Questions

The minimum wavelength of X-rays produced by an electron accelerated through a potential difference of V volts is proportional to:

Two bodies of mass m and 9m are placed at a distance of R. The gravitational potential on the line joining the bodies where the gravitational fied equals zero, will be (G = gravitational contant):

A vehicle travels half the distance with speed θ and the remaining distance with speed 2θ. its average speed is

The errors in the measurement which arise due to unpredictable fluctuations in temperature and voltage supply are:

In a series LCR circuit, the inductance L is 10 mH, Capacitance C is 1μF and resistance R is 100Ω. The frequency at which resonance occurs is

The ratio of frequencies of fundamental harmonic produced by an open pipe to that of closed pipe having the same length is:

In the circuit shown in the figure, the capacitor is initially uncharged and the key K is initially open in this condition, a current of 1 A flows through the 1 Ω resistor. The key is closed at a time t=t₀. Choose the correct options(given \(e^{-1}=0.36\))

Pick the correct answer from the following two statements:
(a) Virtual image can be seen with the eyes.
(b) Virtual image can be captured on the screen.

The lens bounded by two spherical surfaces curved inwards is

If the object and image distances due to a convex lens are x each, then its focal length is

Irrespective of the position of the object on the principal axis, a concave lens always forms an image of nature

Usually Doctors, after testing for defects of vision, prescribe the corrective lens indicating their

Farsightedness is called

Relationship among the speed of light wave (v), wavelength (λ) and frequency (f) is given by

Which of the following statements on red colour light is true?

Blue colour of the sky is due to the scattering of light by the molecules of

If \(i_ 1\) and \(i _2\) are the angle of incidence and angle of emergence due to a prism respectively, then at the angle of minimum deviation

The minimum focal length of the eye-lens of a healthy human being is

Volt per ampere is called

The device which maintains a constant potential difference between its ends is called

Two resistors of 0·4 Ω and 0·6 Ω are connected in parallel combination. Their equivalent resistance is

The junction law proposed by Kirchhoff is based on

The materials which have large number of free electrons and offer low resistance are called