MCQ
Dispersive power depends upon
- AThe shape of prism
- ✓Material of prism
- CAngle of prism
- DHeight of the prism
✓
Answer
Correct option: B.
Material of prism
b
( b)$\omega$ depend only on nature of material.
( b)$\omega$ depend only on nature of material.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A conducting sphere of radius $10 \;cm$ has an unknown charge. If the electric field $20\; cm$ from the centre of the sphere is $1.5 \times 10^{3} \;N / C$ and points radially inward, what is the net charge (in $n\;C$) on the sphere?
→For making standard resistance, wire of following material is used:
You are given three bulbs of 25, 40 and 60 watt. Which of them has lowest resistance
According to Maxwell's equation, the velocity of light in any medium is expressed as.
Plate resistance of two triode valves is 2 KW and 4 KW, amplification factor of each of the valves is 40. The ratio of voltage amplification, when used with 4 KW load resistance, will be
A zinc ball of radius $1 \,cm$ charged to a potential $-0.5 \,V$. The ball is illuminated by a monochromatic ultraviolet light with a wavelength $290 \,nm$. The photoelectric threshold for zinc is $332 \,nm$. The potential of ball after a prolonged exposure to the ultraviolet is ............. $V$
→For a metallic wire, the ratio V/i (V = the applied potential difference, i = current flowing) is
Which of the following could not produce a virtual image
$4$ bulbs marked $40\, W$, $250\, V$ are connected in series with $250\, V$ mains. The total power is ............. $W$
→A positive, singly ionized atom of mass number $A_M$ is accelerated from rest by the voltage $192 V$. Thereafter, it enters a rectangular region of width $w$ with magnetic field $B_0=0.1 \hat{k}$ Tesla, as shown in the figure. The ion finally hits a detector at the distance $x$ below its starting trajectory.
→[Given: Mass of neutron/proton $=(5 / 3) \times 10^{-27} kg$, charge of the electron $=1.6 \times 10^{-19} C$.]
Which of the following option($s$) is(are) correct?
$(A)$ The value of $x$ for $H^{+}$ion is $4 cm$.
$(B)$ The value of $x$ for an ion with $A_M=144$ is $48 cm$.
$(C)$ For detecting ions with $1 \leq A_M \leq 196$, the minimum height $\left(x_1-x_0\right)$ of the detector is $55 cm$.
$(D)$ The minimum width $w$ of the region of the magnetic field for detecting ions with $A_M=196$ is $56 cm$.