Physics MCQS with Answers
A moving charge will gain energy due to the application of
Both of these
Magnetic field
Electric field
None of these
A 50-volt battery is connected across 10-ohm resistor. The current is 4.5 A. The internal resistance of the battery is
0.5 ohm
5.0 ohm
Zero
1.1 ohm
Angular momentum is
Vector (axial)
Vector (polar)
Scalar
None of these
A couple produces
No motion
Purely linear motion
Linear and rotational motion
Purely rotational motion
To explain his theory Bohr used
Conservation of quantum frequency
Conservation of angular momentum
Conservation of linear momentum
Conservation of energy
Which one of the following phenomena is not explained by Huygen’s construction of wavefront?
Origin of spectra
Diffraction
Refraction
Reflection
Bernoulli’s equation is based upon law of conservation
Momentum
Mass
None of these
Energy
The sieman is the SI unit of
Conductance
Resistance
Specific Resistance
Inductance
In an L-R circuit, time constant is that time in which current grows from zero to the value
Io
0.37 Io
0.63 Io
0.50 Io
One cannot see fog because
Light suffers total reflection at the droplet in a fog
The refractive index of fog is infinity
Fog absorbs light
Light is scattered by the droplet in fog
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