List of top Physics Questions

What is the net charge if a certain semiconductor losses 4 valence electrons?
A capacitor of capacitance C charged by an amount Q is connected in parallel with an uncharged capacitor of capacitance 2C. The final charges on the capacitors are
The earth?s mass is $ 80 $ times that of moon and their diameters are $ 1600 \,km $ and $ 800 \,km $ , respectively. If $ g $ is the value of acceleration due to gravity on earth, what is its value on moon?
The refractive index of glass with respect to air is 2. The critical angle at their interface i
If 'a' is the thickness of the glass slab and 'b' is the vertical shift of an object through it, then refractive index of the glass slab is
When we sit at a camp fire, objects beyond the fire are seen swaying. The principle involved in it is
The magnification of an object of height 1 m using a spherical mirror is 1.5. The size of the image is
Which among the following is not a physical quantity?
A clock shows 3 hr 5 min. When seen through a plane mirror, the time appears to be
If T1 and T2 are the temperatures of the hotter and colder water samples respectively and Tis the final temperature of their mixture, then
Condensation is a change of phase from
Which among the following statements on temperature is false?
A temperature of -273 °C in Kelvin scale is
A force exerted on a 3 m long conductor having a current of 2 A in 0.4 T magnetic induction with an angle of 30° is
Generally, right-hand rule is used when the velocity and magnetic field are
Which of the following pair of devices measure the same physical quantity?
A charge of 6 C is flowing through a point in a circuit for 2 minutes. The current in the circuit is
The resistance of a wire of length 1 m and cross-sectional area 1 mm2 is 1Ω. The specific resistance is
Pick the correct answer from the following two staternents :
(a) Kirchhoff's junction law is based on conservation of charge
(b) Kirchhoff's loop law is based on conservation of energy.
The relation between the potential difference and current is established by the scientist
\(\frac{6J}{2C}=\)
The sum of two resistors is 6Ω and their equivalent resistance when connected in parallel is 1.5Ω. The product of the two resistances is
The sun does not appear red during noon hours. Because
If i1 and i2 are the angle of incidence and angle of emergence respectively, then at the angle of minimum deviation
Pick the correct answer from the following two statements:
(a) Myopia in also called near sightedness.
(b) Hypermetropia is also called far sightedness