Physics question and answers for August 11, 2024
- Q A force produces an acceleration of 4 ms 2 in a body of mass m kg and the same force produces an acceleration of 6 ms 2 in another body...
- Q The work function of a metallic surface is 5 01 eV The photoelectrons are emitted when light of wavelength 2000 falls on it The potential difference applied to stop the...
- Q 3 A metal plate of area 10 cm rests on a layer a oil 6 mm thick A tangential force 102 N is applied on it to move it with...
- Q In secondary rainbow there are 1 1 total internal reflection 2 2 total internal reflection 3 No internal reflection 4 Depends on the size of water droplet WOW 13 Edlech...
- Q The P V diagram 2 g of helium gas for a certain process A B is shown in the figure What is the heat given to the gas during the...
- Q A beam of light of wavelength 600 nm from a distance source falls on a single slit 1 mm wide and a resulting diffraction pattern is observed on a screen...
- Q 2 amu mass of a small atom A moves x direction from atom B which is remain stationary energy of between two particles U x 40 x at time 0...
- Q Two identical flutes produce fundamental notes of frequency 300 Hz at 27 C If the temperature of air in one flute is increased to 31 C the number of beats...
- Q direction of ray of light incident on a concave mirror is shown by PQ while direction in which the would travel after reflection is shown by four rays marked 1...
- Q 20 Find the equivalent resistance between A and B if each resistor has a resistance R A m ww m R
- Q 14 15 The following graph shows two isotherms for a fixed mass of an ideal gas The ratio of r m s speed of the molecules at temperatures T and...
- Q If an object is placed in front of a conca mirror and the lower half of the mirror covered with opaque material then w happens 1 lower half of the...
- Q TON S LAWS Two blocks of masses 2 kg and 1 kg are in contact with each other on a frictionless table When a horizontal force of 3 0 N...
- Q 9 Two drops of equal radius coalesce to form bigger drop What is ratio of surface energy c bigger drop to a smaller one 1 21 2 1 2 1...
- Q An ac millivoltmeter has a range of 0 1000 mV and its accuracy is 0 5 of fsd full scale deflection If the input voltage of the instrument is 400...
- Q A short pulse of white light is incident from air to a glass slab at normal incidence After travelling through the slab the first colour to emerge is 1 Blue...
- Q A linear aperture whose width is 0 02 cm is placed immediately in front of a lens of focal length 60 cm The aperture is illuminated normally by a parallel...
- Q 36 Energy released in nuclear fusion and fission processes is due to A conversion of the mass difference into energy B chemical reaction C kinetic energy of parent nuclei D...
- Q V i m V i m2 m2 2 00kg Two masses collide in one dimension m1 6 00kg v1i 10 0 m s v2i 4 00 m s After the...
- Q A body is projected vertically up at t 0 with a velocity of 98 m s Another body is projected from the same point with same velocity after time 4...
- Q B In telescope which mirror is used as objective instead of convex lens 1 Parabolic concav mirror 2 Plane mirror 3 Convex mirror 4 Mirror can t be used
- Q 1 Twelve wires of resistance R each are joined to form a cubical frame Calculate the equivalent resistance between i Two diagonally opposite vertices ii Two adjacent vertices
- Q Give the magnitude and direction of the net force acting on a a drop of rain falling down with a constant speed b a cork of mass 10 g floating...
- Q Unpolished half is unpolished Flashlight beam O In a dark room this coin is placed face up on the floor and illuminated with a thin beamed flashlight as shown in...
- Q Level 9 Which of the following relations associated with Newton s second law ramains valid for all velocities dv dt C F 4 mv A F ma B F m...
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