List of top Physics Questions

Young?? modulus of the wire depends on
You are given two spheres of same material and radii $10\,cm$ and $20\, cm$. They are heated to the same temperature. They are placed in the same environment. The ratio of their rates of cooling will be
You are given four sources of light each one providing a light of a single colour - red, blue, green and yellow. Suppose the angle of refraction for a beam of yellow light corresponding to a particular angle of incidence at the interface of two media is $90^{\circ}$. Which of the following statements is correct, if the source of yellow light is replaced with that of other lights without changing the angle of incidence?
Young's modulus of steel is $1.9 \times 10^{11}\, N \,m^{-2}$. When expressed in $CGS$ units of dynes $cm^{-2}$, it will be equal to ($1 \,N = 10^5$ dyne, $1\, m^2 = 10^4\, cm^2$)
Youngs's modulus for perfectly plastic body is
Zero error, instrumental error and personal errors can be respectively of group
A person moves 30 m north, from there 20m east and finally $30\sqrt{2}$ m south-west from there His displacement from initial position is.
Which of the following elements when added as an impurity into the germanium produces a p-type semiconductor?
Which of the following electromagnetic waves is used in medicine to destroy cancer cells?
Which of the following electromagnetic wave has highest wavelength ?
Which of the following effects the elasticity of a substance
Which of the following does not use the application of eddy current?
Which of the following displacement-time graph is impossible in the case of a particle in one dimensional motion ?
Which of the following decreases in motion along a straight line with constant retardation while the body is moving away from the origin
Which of the following cannot be polarised ?
Which of the following are deflected by the electric field?
Which of the following apparatus is used to determine the Young?? modulus of the material of a given wire?
Which colour has the least speed in glass ?
Which circuit will not show current in ammeter?
When you move from equator to pole, the value of acceleration due to gravity (g):
Where is the intensity of the gravitational field of the earth maximum?
When unpolarised light is incident on a plane glass plate at Brewster?? angle, then which of the following statements is correct?
When the temperature of a gas filled in a closed vessel is increased by $ 1\,^{\circ}C$, its pressure increases by $0.4$ percent. The initial temperature of gas was
When two infinitely long parallel wires separated by a distance of 1 m, each carry a current of 3 ampere, the force in newton/ metre length experienced by each will be, (give $\mu_0=4\pi \times 10^{-7}$ S.I.Units) .
When the load on a wire is increased from $3 \,kg \,wt$ to $5 \,kg \,wt$ the elongation increases from $0.61\, mm$ to $ 1.02\, mm$. The work done during the extension of the wire is