Physics question and answers for August 13, 2024
- Q On heating a uniform metallic cylinder length increases by 3 The area of cross section of its base will increase by 1 1 5 3 9 2 3 4 6
- Q A fixed sphere of radius R and charge Q uniformly has a small groove of length as shown in figure Another point charge of mass m and charge q is...
- Q A rocket of initial mass 6000 kg ejects gases at a constant rate of 16 kg s with constant relative speed of 11 km s What is acceleration of rocket...
- Q charge d 4F towards charge A cylinder of radius R and length L is placed in a uniform electric field E parallel to the cylinder axis The total flux for...
- Q Thermal Properties of Matter 261 22 100 g of ice latent heat 80 cal g at 0 C is mixed with 100 g of water specific heat 1 cal 1...
- Q A student measured the diameter of a small steel ball using a screw gauge of least count 0 001 cm The main scale reading is 4 mm and that of...
- Q etic field vectors present at a point P are given by B B and B respectively as shown in the given figure The magnitude of net magnetic field at point...
- Q If the tension in the cable supporting an elevator is equal to the weight of the elevator the elevator ma A going up with increasing speedID B going down with...
- Q Find average frequency of collision for oxygen molecule of temperature 300 K and pressure 1 atm Average speed for oxygen molecule is 450 m s and molecular diameter is 2...
- Q The system as shown in the figure is released from rest The pulley spring and string are ideal friction is absent everywhere The speed of 5 kg block when 2...
- Q If external magnetic intensity on a paramagnetic material is made 4 times and the absolute temperature is made 3 times then how many times will be the self magnetisation 1...
- Q Sir Ma am in Pascal s law it is being told that pressure app lied at any place in an enclosed fluid is transmitted with u ndiminished magnitude to every...
- Q 12 Relative permeability of iron is 5500 then its 12 magnetic susceptibility is 2 5501 4 zero 1 5500 3 5499 gracht 1 55 3 5
- Q If the wire is gently tapped in vertical direction halfway between the pulleys what is the lowest frequency at which it will vibrate transversely The mass per unit length of...
- Q ratio of diameters of an air bubble at the bottom and at the surface of a lake is 1 2 What is the depth of the lake 1 atmospheric pressure...
- Q 55 Identify the wrong statement regarding the earth s magnetism a b c d the declination is smaller at higher latitudes and greater near the equator In most of the...
- Q a moving coil galvanometer the coil having N turns and area of cross section A is placed in magnetic field B When current I is passed through it the deflection...
- Q 25 A simple pendulum of period Thas a metal bob which is negatively charged If it is allowed to oscillate above a positively charged metal plate its period will a...
- Q Doesn t a glass slab just shifts the image laterally Then h ow will the distance change Please clear my specific dou bt Plane glass slab is kept between a...
- Q A sample of gas in a box is at pressure P and temperature To If number of molecules is doubled and total kinetic energy of the gas is kept constant...
- Q When a dip magnetic needle is suspended in 18 the earth s magnetic field 1 In northern hemisphere the north pole of dip tilts downwards At southern hemisphere south pole...
- Q Consider mass of Sun and Earth to be 2 1030 kg and 6 1024 kg respectively The distance between Earth and Sun is 1 5 10 1 m Calculate the...
- Q Consider two coils of radii r and r placed at a distance d away as shown in the figure Assuming the length of the coils 1 1 d with n...
- Q Mark the CORRECT option A vertical plane containing the vertical axis orthogonal to ground and the longitude is called the geographic meridian O Geographic meridian and magnetic meridian for earth...
- Q An electromagnetic wave is represented by the electric field E Ensin oot 6y 8z Taking unit vectors in x y and z directions to be i j k the direction...
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