Question
When a current I flows through a wire of resistance R for time t
When a current I flows through a wire of resistance R for time t then the electrical energy produced is given by:…
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Two notes are produced from two different musical instruments
Two notes are produced from two different musical instruments, such that they have same loudness and same pitch. The produced notes differ…
Question
When a body vibrates under a periodic force, the vibrations of the body are always
When a body vibrates under a periodic force, the vibrations of the body are always: (a) natural vibrations (b) damped vibrations (c)…
Question
A concave lens produces only image
A concave lens produces only …………… image. (a) real, enlarged (b) virtual, enlarged (c) virtual, diminished (d) real, diminished
Question
Speed of blue light in water is
Speed of blue light in water is: (a) more than green light (b) more than orange light (c) more than violet light…
Question
Which of the following radiations suffer maximum deflection in a magnetic field
Which of the following radiations suffer maximum deflection in a magnetic field? (a) Alpha radiations (b) Beta radiations (c) Gamma radiations (d)…
Question
The energy conversion in a washing machine is from
The energy conversion in a washing machine is from …………… (a) magnetic to electrical (b) electrical to mechanical (c) electrical to magnetic…
Question
When the speed of a moving object is doubled, then its kinetic energy
When the speed of a moving object is doubled, then its kinetic energy: (a) remains the same (b) decreases (c) is doubled…
Question
Clockwise moment produced by a force about a fulcrum is considered to be
Clockwise moment produced by a force about a fulcrum is considered to be: (a) Positive (b) Negative (c) Zero (d) None of…
Question
K, L and M are beakers containing three different solutions as shown below
K, L and M are beakers containing three different solutions as shown below. Name the beaker which: (a) contains only ions. (b)…