A man goes 10 m towards north, then 20m towards east, the displacement is
A man goes 10 m towards north, then 20m towards east, the displacement is Options (a) 22.5 m (b) 25…
7 years ago
Physics
The inductive reactance of an inductor of 1/π henry at 50 Hz frequency is
The inductive reactance of an inductor of 1/π henry at 50 Hz frequency is Options (a) 5πΩ (b) 50Ω (c)…
7 years ago
If radius of earth’s orbit is made 1/4, the duration of a year will become
If radius of earth's orbit is made 1/4, the duration of a year will become Options (a) 4 times (b)…
7 years ago
When aluminium is added as an impurity to silicon, the resulting material is
When aluminium is added as an impurity to silicon, the resulting material is Options (a) P-type semiconductor (b) P-type conductor…
7 years ago
A comb run through one’s dry hair attracts small bits of paper. This is due to
A comb run through one's dry hair attracts small bits of paper. This is due to Options (a) comb is…
7 years ago
If temperature of gas increases from 27°C to 927°C, the kinetic energy will be
If temperature of gas increases from 27°C to 927°C, the kinetic energy will be Options (a) double (b) half the…
7 years ago
In Young’s double slit experiment, for which colour the fringe width is the least
In Young's double slit experiment, for which colour the fringe width is the least Options (a) Red (b) Green (c)…
7 years ago
A body has 80 microcoulomb of charge. Number of additional electrons in it will be
A body has 80 microcoulomb of charge. Number of additional electrons in it will be Options (a) 8 x 10⁵…
7 years ago
A tyre filled with air (27° C and 2 atm) bursts. The temperature of air is (ˠ=1.5)
A tyre filled with air (27° C and 2 atm) bursts. The temperature of air is (ˠ=1.5) Options (a) -33°…
7 years ago
The transverse nature of electromagnetic waves is proved by which of the following?
The transverse nature of electromagnetic waves is proved by which of the following? Options (a) Interference phenomena (b) Diffraction phenomena…
7 years ago