MCQ
The resolving limit of healthy eye is about
- ✓$1'$ or ${\left( {\frac{1}{{60}}} \right)^\circ }$
- B$1''$
- C${1^o}$
- D${\left( {\frac{1}{{60}}} \right)" }$
✓
Answer
Correct option: A.
$1'$ or ${\left( {\frac{1}{{60}}} \right)^\circ }$
a
(a) Resolving limit of eye is one minute $(1').$
(a) Resolving limit of eye is one minute $(1').$
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 man of mass $50 \,kg$ carries a bag of weight $40 \,N$ on his shoulder. The force with which the floor pushes up his feet will be ......... $N$
→Given that: $\lambda = a\,\cos \,\left( {\frac{t}{p} - qx} \right)$ , where $t$ represents time in second and $x$ represents distance in metre. Which of the following statements is true?
→Three blocks with masses $m, 2m $ and $3 m$ are connected by strings, as shown in the figure. After an upward force $F$ is applied on block $m,$ the masses move upward at constant speed $v.$ What is the net force on the block of mass $2\ m\ ?\, (g$ is the acceleration due to gravity$)$
→A potential divider circuit is shown in figure. The output voltage $V_0$ is
→A particle is executing simple harmonic motion with an amplitude of $0.02$ metre and frequency $50\, Hz$. The maximum acceleration of the particle is
→A Helmholtz coil has pair of loops, each with $N$ turns and radius $R$. They are placed coaxially at distance $R$ and the same current $I$ flows through the loops in the same direction. The magnitude of magnetic field at $P$, midway between the centres $A$ and $C$, is given by (Refer to figure)
→A glass capillary tube of internal radius $r=0.25\,mm$ is immersed in water. The top end of the tube projected by $2\,cm$ above the surface of the water. At $...........^{\circ}$ angle does the liquid meet the tube.Surface tension of water $=0.7\,N / m$.
→The minimum intensity of light to be detected by human eye is ${10^{ - 10}}W/{m^2}$. The number of photons of wavelength $5.6 \times {10^{ - 7}}m$ entering the eye, with pupil area ${10^{ - 6}}{m^2}$, per second for vision will be nearly
→The electromotive force of a primary cell is $2\, volts$. When it is short-circuited it gives a current of $4$ amperes. Its internal resistance in $ohms$ is
→A car of mass $ ‘m’ $ is driven with acceleration $ ‘a’ $ along a straight level road against a constant external resistive force $ ‘R’.$ When the velocity of the car is $‘V’, $ the rate at which the engine of the car is doing work will be
→