The modern bird rise in
The modern bird rise in Options (a) palaeozoic (b) coenozoic (c) mesozoic (d) archaeozoic Correct Answer: mesozoicExplanation:No explanation available. Be…
7 years ago
UP2001
Three capacitors of capacitances 3 μF, 10 μF and 15 μF are connected in series
Three capacitors of capacitances 3 μF, 10 μF and 15 μF are connected in series to a voltage source of…
7 years ago
The acceleration of an electron in an electric field of magnitude 50 V/cm,
The acceleration of an electron in an electric field of magnitude 50 V/cm, if e/m value of the electron is…
7 years ago
An avarage induced e.m.f. of 1 V appears in a coil when the current in it is changed
An avarage induced e.m.f. of 1 V appears in a coil when the current in it is changed from 10…
7 years ago
The photoelectric threshold wevelength for potassium (work function being 2 eV) is
The photoelectric threshold wevelength for potassium (work function being 2 eV) is Options (a) 620 nm (b) 310 nm (c)…
7 years ago
Calcium plate has a maximum possible radiation wavelength 400 nm to eject electrons.
Calcium plate has a maximum possible radiation wavelength 400 nm to eject electrons. Its work function is Options (a) 23…
7 years ago
Bragg’s law for X-rays is
Bragg's law for X-rays is Options (a) d sin θ = 2nλ (b) 2d sin θ = nλ (c) n…
7 years ago
At 0⁰C, 15 gm of ice melts to form water at 0⁰C. The change in entropy is
At 0⁰C, 15 gm of ice melts to form water at 0⁰C. The change in entropy is Options (a) zero…
7 years ago
Unit of electrical conductivity is
Unit of electrical conductivity is Options (a) Ω⁻¹ (b) Ω⁻¹ cm (c) Ω⁻¹ cm⁻² (d) Ω⁻¹ cm⁻¹ Correct Answer: Ω⁻¹…
7 years ago
Planck’s constant has same dimensions as those of
Planck's constant has same dimensions as those of Options (a) Angular momentum (b) Linear momentum (c) Work (d) Coefficient of…
7 years ago