Two rods having thermal conductivity in the ratio of 5:3 having equal lengths and equal cross-sectional area are joined end to end. If the temperature of the free end of the first rod is 100°C and free end of the second rod is 20°C, then the temperature of the junction is? a) 50°C b) 70°C c) 60°C d) 90°C

Q: 2. A mass m is moving with a constant velocity along a line parallel to the x-axis, away from the or...

A: Option

Q: 2) Which of the downs are not used during quantum tunneling? A) ReflectionB) principle of implutyC) ...

A: The probability of an object tunneling through a barrier decreases with the object's increasing mass...

Q: Two particles are seen to collide and move jointly together after the collision. During such a colli...

A: Option d

Q: A particle of mass 100g is thrown vertically upwards with a speed of 5m/s. The work done by the forc...

A: D

Q: If the resultant of all the external forces acting on a system of particles is 0, then from an inert...

A: B

Q: Comets mover around the sun in highly elliptical orbits. The gravitational force on the comet due to...

A: Option

Q: QUESTION 2 A negative point charge of 1.5 nC and a positive point charge of 4 nC are placed 10 ...

A: Given: q1=-1.5 nC q2=4 nC r=10 cm Formula used: E1=14πε0q1r2

Q: Heat current is maximum in which of the following? a) Copper b) Steel and copper c) Copper and steel...

A: Heat current is maximum in Copper.  Heat current is inversely proportional to the Thermal resistance...

Q: Energy stored in stretching a string per unit volume is ___________ a) 1/2×stress×strain b) stress×s...

A: A

Q: A solid sphere rolls down two different inclined planes of the same heights but different angles of ...

A: A

Q: 50g of ice at 0°C is mixed with 50g of water at 80°C, what will be the final temperature of a mixtur...

A: Option

Q: A machine gun fires 60 bullets per minute, with a velocity of 700m/s. If each bullet has a mass of 5...

A: B

Q: The motion of planets in the solar system is an example of the conservation of ___________ a) Mass b...

A: A

Q: If the radius of earth were to shrink by one percent (its mass remains the same), then the accelerat...

A: Option

Q: A simple pendulum hanging freely and at rest is vertical because in that position ___________ a) Kin...

A: D

Q: Assuming the earth to be a sphere of uniform mass density, how much would a body weigh half way down...

A: Option

Q: A copper wire of length 3m and 1mm diameter is subjected to a tension of 5N. Calculate the elongatio...

A: D

Q: Four point charges are equally separated by 1.00 m in air as shown. If q1 = 3.0 nC, q2 = -4.0 nC, q3...

A: Given data q1=3 nCq2=-4 nCq3=2 nCq4=-5 nCr=1 m At mid point r=0.5 m

Q: Amount of heat required to raise the temperature of a body through 1K is called ___________ a) Speci...

A: B

Q: Which one of the following statements is true? A dog whistle isn’t loud enough for humans to hear, o...

A: 1) A dog whistle is in ultrasonic range (i.e. frequency is higher than 20kHz) as dogs can hear this ...

Q: Temperature is a microscopic concept. a) True b) False

A: False

Q: What is the effect of annealing on elasticity of materials? a) Increases the elasticity b) Decreases...

A: Option

Q: In an elastic collision of two billiard balls, the total kinetic energy is conserved ___________ a) ...

A: This is a question related to the elastic collision. Elastic collision: An elastic collision is a co...

Q: Mud thrown on a wall and sticking to it is an example for ___________ a) Inelastic collision b) Elas...

A: Given: Mud thrown on a wall and sticking to it is an example for ___________  

Q: It is painful to walk barefooted on the ground covered with edged pebbles. a) True b) False

A: While walking, when the entire weight of our body gets supported on the sharp edge of any pebble, it...

Q: What is the lattice constant for FCC crystal having atomic radius 1.476 Å? a) 1.476 Å b) 4.1748 Å c)...

A: B

Q: Solids with weekly bonded electrons are good conductors of heat.a) Trueb) False

A: True

Q: At a critical temperature, the surface tension of a liquid ___________ a) Is zero b) Is infinity c) ...

A: A

Q: The figure above shows a circuit containing an electromotive force (a battery), a capacitor with a c...

A: We need to solve the given differential equation  RdQdt+1CQ=E(t) The resistance is 30 Ω, The voltage...

Q: taining 6 x 10" unde isotope has an activity half-life?

A: Hey there, since you have posted multiple questions. We have answered the first one for you. Please ...

Q: A string 4 m long is stretched, resulting in a wave speed of 60 m/s. It is given an initial displace...

A: The general equation of a standing wave in a stretched string is given by: Compare equation of init...

Q: Which is not considered a wave function in the range in which it is defined?

A: The acceptable conditions for wave function, within a given internal are The function must be singl...

Q: What is Black hole? a) Super surface of the atmosphere b) Ozone layer c) Super dense planetary mater...

A: C

Q: A cube is subjected to a uniform volume compression. If the side of the cube decreases by 2%, the bu...

A: D

Q: Stuck on this question for hours. Question in image. God bless & stay safe during these times  :...

A:

Q: Question 1. Given an infinite dimensional Hilbert space construct a sequence x, So that ||x|| = 1 bu...

A: Given: An infinite-dimensional Hilbert space   To find: Construct a sequence xn so that ‖xn‖=1 but (...

Q: The breaking stress of a wire depends upon ___________ a) Length of the wire b) Radius of the wire c...

A: C

Q: 80g of water at 30°C is poured on a large block of ice which is at 0°C. The mass of ice that melts i...

A: A

Q: Given a block of mass 5.00 kg on a table being pulled horizontally by a rope. The rope pulls to the ...

A: Let F be defined as the force, m be defined as the mass of the block, and a be defined as the accele...

Q: A 1024-kg blue ball is dropped from an initial z-position of 4 x 106 m through the center of a plane...

A: Given: The mass of blue ball is mb=1024 kg. The distance of blue ball from surface of planet is d=4...

Q: 16. A 2.50 x 10-13 kg oil drop accelerates upward at a rate of 2.80 m/s2 when placed between two hor...

A:

Q: A JFET has a specified Pinch- off Voltage of 5V. when Vas =0, what is Vos at the Point where the dra...

A: This is a question from the electronics. JFET (Junction Field-effect Transistor): JFETs are voltage-...

Q: Heat was given to a body, which raises its temperature by 1°C is ___________a) Water equivalentb) Te...

A: C

Q: The moment of inertia of a uniform circular disc about its diameter is 100gcm2. What is its moment o...

A: By the theorem of parallel axes, moment of inertia about a tangent parallel to the diameter, I = Id+...

Q: In order that the heat flows from one part of a solid to another part, what is required? a) Uniform ...

A: B

Q: A composite rod made of copper (1.8×10(-5) K(-1)) and steel (α=1.2×10(-5) K(-1)) is heated. Then ___...

A: Given data: The coefficient of thermal expansion of the copper rod is αc=1.8×10-5 K-1. The coeffici...

Q: On the application of a constant torque, a wheel is turned from rest through 400 radians in 10s. Fin...

A: D

Q: A particles undergoes uniform circular motion. About which point on the plane of the circle, will th...

A: A

Q: Deaw an electui ciait hith a statch e 2ells 3veach, 3Resistos f 102 ui Ellis", The esictance O102 cm...

A: R1, R2 and R3 are 3 resistances in series, 10 ohms eachE1 and E2 are the two cells, 3V eachS is the ...

Q: A train has to negotiate a curve of radius 400m. By how much should the putter rail be raised with r...

A: Radius of the curve, R=400m  Speed limit of the train, v= 48 Km/hr=13.33 m/s We assume that there is...