Physics question and answers for July 18, 2024
- Q A current of 1 mA is flowing through a copper wire How many electrons will pass a given point in one second e 1 6 10 Coulomb 1 6 25...
- Q 4 Red light Microwaves X Ray Rad A square coil ABCD lying in x y plane with its centre at origin A long straight wire passing through origin carries a...
- Q ectron is orbiting in a circular orbit under the influence of a constant transverse magnetic field of strength B Assuming that Bohr s postulate regarding th entum holds good for...
- Q The focal length of a concave mirror is 30 cm Find the position of the object in front of the mirror on axis so that the image is three times...
- Q Q18 A battery has e m f 4V and internal resistance r When this battery is connected to an external resistance of 2 ohms a current of 1 amp flows...
- Q P 1x105 T At place s to complete one vibration The value of the earth s horizontal field at that place is a 0 25 x 10 T c 0...
- Q Q6 The equivalent resistance across AB is 1 2R 2 R 2 3 4R 3 4 3R 2 1 R H 2R R www www 2 by B 3 69...
- Q Q11 From NCERT If I be the current limit of a fuse wire of length I and radius r then select the appropriate relation 1 Ial 2 I a r...
- Q 4 A drunkard walking in a narrowlane takes 5 steps forward and 3 steps backward each step of 1 m long per second and so on Determine how long the...
- Q n photoelectric effect the saturation photocurrent Depends both on intensity and frequency of the incident light Increase with increase in frequency of incident light Decreases with increase in frequency of...
- Q A gas undergoes following process Ab Compressed to half of the initial volume P x V Bc CD No Isothermal expansion to intial volume Adiabatic process such that PD PA...
- Q An isolated system is one in which Mass does not cross boundaries of the system though energy may do so Neither mass nor energy crosses the boundaries of the system...
- Q 7 Two thin circular discs of mass m and 4m having radii of a and 2a respectively are rigidly fixed by a massless rigid rod of length 1 24 a...
- Q usceptibility is positive and large for a a paramagnetic substance b ferromagnetic substance substance c non magnetic d diamagnetic substance A compass needle which is allowed to move in a...
- Q 39 A plane wavefront 6 x 10 7 m falls on a slit 0 4 m wide A convex lens of focal length 0 8 m placed behind the slit...
- Q Q14 The sensitivity of a potentiometer can be increased by 1 increasing the potential gradient 2 decreasing the length of potentiometer wire 3 decreasing the current in the potentiometer wire...
- Q If the light of wavelength is incident on metal surface the ejected fastest electron has speed v If 3 the wavelength is changed to the speed of the 4 fastest...
- Q For given PV diagram AB is isothermal at T temperature CD is also isothermal at T temperature given that T T2 Then which one of the following is correct P...
- Q 3 86 A block of mass mis attached with a massless spring of force constant The block is placed over a rough inclined surface for which the coefficient of friction...
- Q For CORRECT answer you will be awarded 4 Marks and for WRONG answer there is a negative marking of 1 Mark No ma Locate the position of the point P...
- Q The correct sequence of the increasing wavelength of the given radiation sources is a radioactive sources X rays tube crystal oscillator sodium vapour lamp aves b radioactive source X rays...
- Q Water flows along a horizontal pipe whose or section is not constant The pressure is 1 cm of where the velocity is 35 omis At a point where velocity is...
- Q You are given two converging lenses of focal lengths 1 25 cm and 5 cm to design a compound microscope If it is desired to have a magnification of 30...
- Q A ball is thrown in vertically upwards direction with velocity 50 m s Maximum height covered by the ball will be g 10 m s
- Q We wish to see inside an atom Assuming the atom to have a diameter of 100 pm this means that one must be able to resolve a width of say...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!