MCQ
Erg $-m^{-1}$ can be the unit of measure for
  • Force
  • B
    Momentum
  • C
    Power
  • D
    Acceleration

Answer

Correct option: A.
Force
(a) Energy $(E)=F \times d \Rightarrow F=\frac{E}{d}$ so Erg/metre can be the unit offorce.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

In an ac circuit the reactance of a coil is $\sqrt{3}$ times its resistance, the phase difference between the voltage across the coil to the current through the coil will be
The volume of an ideal gas is $1$ litre and its pressure is equal to $72 \mathrm{~cm}$ of mercury column. The volume of gas is made $900 \mathrm{~cm}$ by compressing it isothermally. The stress of the gas will be
In the adjoining diagram, a wavefront $A B$, moving in air is incident on a plane glass surface $X Y$. Its position $C D$ after refraction through a glass slab is shown also along with the normals drawn at $A$ and $D$. The refractive index of glass with respect to air ( $\mu=1$ ) will be equal to
Image
A glass prism $(\mu=1.5)$ is dipped in water $(\mu=4 / 3)$ as shown in figure. A light ray is incident normally on the surface $A B$. It reaches the surface BC after totally reflected, if
Image
The source producing sound and an observer both are moving along the direction of propagation of sound waves. If the respective velocities of sound, source and an observer are $v, v_s$ and $v_o$, then the apparent frequency heard by the observer will be ( $n=$ frequency of sound)
One $10 V, 60 W$ bulb is to be connected to $100 V$ line. The required induction coil has self inductance of value $(f=50 Hz )$
Kirchoff's 1 law and Il law of current, proves the
$\mathrm{X}$-rays are not used for radar purpose because
A ball is moving to and fro about the lowest point $A$ of a smooth hemispherical bowl. If it is able to rise up to a height of $20 cm$ on either side of $A$, its speed at $A$ must be (Take $=10 m / s$, mass of the body 5 g)
An achromatic prism is made by crown glass prism $\left(A_c=19^{\circ}\right)$ and flint glass prism $\left(A_F=6^{\circ}\right)$. If ${ }^C \mu_v=1.5$ and ${ }^F \mu_v=1.66$, then resultant deviation for red coloured ray will be