Category: Questions

Find the length of the optical path two media in contact of length d1 and d2

Find the length of the optical path two media in contact of length d1 and d2 of refractive indices μ1 and μ2 respectively : Question : Find the length of the optical path two media in contact of length d1 and d2 of refractive indices μ1 and μ2 respectively : (a) (b) (c) (d) Solution : Optical path length is the distance travelled by light in vacuum in the same…

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The image of point P when viewed from top of the slabs will be :

The image of point P when viewed from top of the slabs will be : Question : The image of point P when viewed from top of the slabs will be : (a) 2.0 cm above P (b) 1.5 cm above P (c) 2.0 cm below P (d) 1 cm above P Solution : First method : Using the…

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Two Absolute scales X and Y

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Two Absolute scales X and Y Question :- Two absolute scales X and Y assigned numerical values 200 and 450 to the triple point of water. What is the relation between TX and TY? (A) 9Tx = 4TY (B) 4Tx = 9TY (C) Tx = 3TY (D) None of these Solution :- We are going to…

Questions, Class 11th NCERT

A gun weighing 10 kg fires a bullet

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A gun weighing 10 kg fires a bullet Question :- A gun weighing 10 kg fires a bullet of 20g with a velocity 250 m/s. With what velocity does the gun recoil? Solution :- Here M = 10 kg, m = 2g = 0.02 kg, v = 250 m/s, V = ? Applying the…

Questions, Class 11th NCERT

A bomb at rest explodes into three equal fragments

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A bomb at rest explodes into three equal fragments Question :- A bomb at rest explodes into three equal fragments. Two fragments fly off at right angles with velocity 12 m/s and 9 m/s. If the explosion process occurs in 0.1 s, find out the average force acting on the third particle, if total mass of the bomb…

Questions, Class 11th NCERT

A bomb at rest splits into three identical parts

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A bomb at rest splits into three identical parts Question :- A bomb at rest splits into three identical parts. If two pieces are moving at right angles to each other with same velocity v m/s, the velocity of third fragment is (A) v/√2 (B) v/2 (C) 2v (D) v√2 Solution :- Before splitting,…

Questions, Class 11th NCERT

During an experiment with a meter bridge

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During an experiment with a meter bridge Question :- During an experiment with a meter bridge, the galvanometer shows a null point when the jockey is pressed at 40.0 cm using a standard resistance of 90Ω. The least count of the scale used in the meter bridge is 1mm. The unknown resistance is – (1)…

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The mass M shown in the figure oscillates in SHM with amplitude A

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The mass M shown in the figure oscillates in SHM with amplitude A Question:- The mass M shown in the figure oscillates in simple harmonic motion with amplitude A. The amplitude of the point P is Solution :- As the springs are connected in series, so restoring force is same Amplitude A is given by, Now the amplitude of…

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A uniform rod of length L and mass M is pivoted at the centre

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A uniform rod of length L and mass M is pivoted at the centre Question :- A uniform rod of length L and mass M is pivoted at the centre. Its two ends are attached to two springs of equal spring constants k. The springs are fixed to rigid supports as shown in the…

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A meter bridge is set up as shown

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A meter bridge is set up as shown Question :- A meter bridge is set up as shown to determine an unknown resistance X using a standard 10 ohm resistor. The galvanometer shows null point when tapping key is a 52 cm mark. The end-corrections are 1 cm and 2 cm respectively for the ends A and B. The determined value of X is: (a) 10.2 Ω (b) 10.6 Ω (c) 10.8 Ω…

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