MCQ
The graph between $E$ and $v$ is
- ✓
- B
- C
- D
✓
Answer
Correct option: A.
a
(a)Kinetic energy $E = \frac{1}{2}m{v^2}$$⇒$ $E \propto {v^2}$
graph will be parabola symmetric to $E-$axis.
(a)Kinetic energy $E = \frac{1}{2}m{v^2}$$⇒$ $E \propto {v^2}$
graph will be parabola symmetric to $E-$axis.
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→Choose the correct match
→|
List I |
List II |
|---|---|
|
$(i)$ Curie |
$(A)$ $ML{T^{ - 2}}$ |
|
$(ii)$ Light year |
$(B)$ $M$ |
|
$(iii)$ Dielectric strength |
$(C)$ Dimensionless |
|
$(iv)$ Atomic weight |
$(D)$ $T$ |
|
$(v)$ Decibel |
$(E)$ $M{L^2}{T^{ - 2}}$ |
|
$(F)$ $M{T^{ - 3}}$ |
|
|
$(G)$ ${T^{ - 1}}$ |
|
|
$(H)$ $L$ |
|
|
$(I)$ $ML{T^{ - 3}}{I^{ - 1}}$ |
|
|
$(J)$ $L{T^{ - 1}}$ |
The magnifying power of a compound microscope increases when
Assertion: A double convex lens $(\mu = 1.5)$ has focal length $10\,cm$. When the lens is immersed in water $(\mu = 4/3)$ its focal length becomes $40\,cm$
→Reason: $\frac{1}{f} = \frac{{{\mu _1} - {\mu _m}}}{{{\mu _m}}} \left( {\frac{1}{{{R_1}}} - \frac{1}{{{R_2}}}} \right)$