JEE Mains · Physics · STD 12 - 9. Ray optics and optical instruments
An object is placed at a distance of \(12\,cm\) in front of a plane mirror. The virtual and erect image is formed by the mirror. Now the mirror is moved by \(4\,cm\) towards the stationary object. The distance by which the position of image would be shifted, will be:
- A \(4\,cm\) towards mirror
- B \(8\,cm\) towards mirror
- C \(8\,cm\) away from mirror
- D \(2\,cm\) towards mirror
Answer & Solution
Correct Answer
(B) \(8\,cm\) towards mirror
Step-by-step Solution
Detailed explanation
\(\therefore\) Shifting of image will be \(8\,cm\) towards mirror.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- Nitrogen gas is at \(300^{\circ} C\) temperature. The temperature (in \(K\)) at which the \(rms\) speed of a \(H _{2}\), molecule would be equal to the \(rms\) speed of a nitrogen molecule, is........ (Molar mass of \(N _{2}\) gas \(28\, g\) )JEE Mains 2020 Medium
- In an octagon \(ABCDEFGH\) of equal side, what is the sum of \(\overrightarrow{ AB }+\overrightarrow{ AC }+\overrightarrow{ AD }+\overrightarrow{ AE }+\overrightarrow{ AF }+\overrightarrow{ AG }+\overrightarrow{ AH }\) if, \(\overrightarrow{ AO }=2 \hat{ i }+3 \hat{ j }-4 \hat{ k }\)
JEE Mains 2021 Hard - Two cars \(A\) and \(B\) are moving in the same direction along a straight line with speeds \(100\) km/h and \(80\) km/h, respectively such that car \(A\) is moving ahead of car \(B\). A person in car \(B\) throws a stone with a speed \(v\) so that it hits the car \(A\) with a speed of \(5\) m/s. The value of \(v\) is ______ km/h.JEE Mains 2026 Medium
- A mass \(\mathrm{m}\) is suspended from a spring of negligible mass and the system oscillates with a frequency \(f_1\). The frequency of oscillations if a mass \(9 \mathrm{~m}\) is suspended from the same spring is \(f_2\). The value of \(\frac{f_1}{f_{.2}}\) is _______.JEE Mains 2024 Hard
- A spherical body of mass \(100 \mathrm{~g}\) is dropped from a height of \(10 \mathrm{~m}\) from the ground. After hitting the ground, the body rebounds to a height of \(5 \mathrm{~m}\). The impulse of force imparted by the ground to the body is given by : _______. (given \(\mathrm{g}=9.8 \mathrm{~m} / \mathrm{s}^2\) )JEE Mains 2024 Hard
- Two springs of force constants \(300\, N/m\) (Spring \(A\)) and \(400\, N/m\) (Spring \(B\)) are joined together in series . The combination is compressed by \(8.75\, cm\). The ratio of energy stored in \(A\) and \(B\) is \(\frac{{{E_A}}}{{{E_B}}}\). Then \(\frac{{{E_A}}}{{{E_B}}}\) is equal toJEE Mains 2013 Hard
More PYQs from JEE Mains
- Let \(A =\left\{1, a _{1}, a _{2} \ldots \ldots a _{18}, 77\right\}\) be a set of integers with \(1< a _{1}< a _{2}<\ldots \ldots< a _{18}<77\). Let the set \(A + A =\{ x + y : x , y \in A \} \quad\) contain exactly \(39\) elements. Then, the value of \(a_{1}+a_{2}+\ldots \ldots+a_{18}\) is equal to...........JEE Mains 2022 Hard
- Let \(f(x)=\int_0^t t\left(t^2-9 t+20\right) d t, 1 \leq x \leq 5\). If the range of \(f\) is \([\alpha, \beta]\), then \(4(\alpha+\beta)\) equals :JEE Mains 2025 Easy
- Let \(\alpha, \beta, \gamma\) be the real roots of the equation, \(x ^{3}+ ax ^{2}+ bx + c =0,( a , b , c \in R\) and \(a , b \neq 0)\) If the system of equations (in, \(u,v,w\)) given by \(\alpha u+\beta v+\gamma w=0, \beta u+\gamma v+\alpha w=0\) \(\gamma u +\alpha v +\beta w =0\) has non-trivial solution, then the value of \(\frac{a^{2}}{b}\) isJEE Mains 2021 Hard
- In an experiment, a set of reading are obtained \(-1.24 mm, 1.25 mm, 1.23 mm, 1.21 mm\). The expected least count of the instrument used in recording these readings is ___________ mm.JEE Mains 2026 Medium
- For all \(z \in C\) on the curve \(C _1:| z |=4\), let the locus of the point \(z +\frac{1}{ z }\) be the curve \(C _2\). ThenJEE Mains 2023 Hard
- The speed of a swimmer is \(4\,km\,h ^{-1}\) in still water. If the swimmer makes his strokes normal to the flow of river of width \(1\,km\), he reaches a point \(750 \,m\) down the stream on the opposite bank.The speed of the river water is \(.........km h ^{-1}\)JEE Mains 2023 Medium