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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)…
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 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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Binding Energy Per Nucleon | Binding Energy Curve Binding Energy Per Nucleon | Binding Energy Curve :- The stability of a nucleus is not measured by it’s binding energy, but it is measured by “binding energy per nucleon”. If B.E./nucleon of a nucleus is less, the nucleus is less stable whereas the nucleus is…
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विकिरण दाब | विकिरण दाब का सूत्र क्या है? विकिरण दाब :- मैक्सवेल के अनुसार एक विद्युत चुम्बकीय तरंग संवेग () एवं उर्जा () का वहन करती है और जब यह विद्युत चुम्बकीय तरंग किसी वस्तु द्वारा अवशोषित/परावर्तित होती है, तो यह वस्तु सतह के लंबवत दिशा में एक बल का अनुभव करेगी। मैक्सवेल…
इलेक्ट्रॉन की डी-ब्रोग्ली तरंगदैर्ध्य का सूत्र (The de Broglie wavelength associated with an electron) इलेक्ट्रॉन की डी-ब्रोग्ली तरंगदैर्ध्य का सूत्र | The de Broglie wavelength associated with an electron :- माना किसी इलेक्ट्रॉन को V वोल्ट के विभवांतर से विरामावस्था से त्वरित किया जाता है, तब इलेक्ट्रॉन द्वारा अर्जित गतिज ऊर्जा इलेक्ट्रॉन पर किया…
Nuclear Binding Energy Nuclear Binding Energy :- We have seen in the article “Composition of nucleus” that the nucleus is made up of neutrons and protons. Therefore it may be expected that the mass of the nucleus is equal to the total mass of its individual protons and neutrons. However, the nuclear mass M…
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…
8 cells each of internal resistance Question :- 8 cells each of internal resistance 0.5 Ω and emf 1.5V are used to send a current through an external resistor of (a) 200 Ω (b) 0.002 Ω (c ) 1.0 Ω. How would you arrange them to get the maximum current in each case? Find…
A point source causes photoelectric effect Question :- A point source causes photoelectric effect from a small metal plate. Which of the following curves may represent the saturation photocurrent as a function of the distance between the source and the metal? Solution :- If number of photons falling on the plate increases then the…