Physics questions
20027 published questions with worked solutions.
- A helicopter is flying horizontally with a speed 'v' at an altitude 'h' has to drop a food packet for a man on the ground. What...
- Two particles A and B having charges 20 and –5 respectively are held fixed with a separation of 5 cm. At what position a third...
- A reversible engine has an efficiency of 1 4 . If the temperature of the sink is reduced by 58°C, its efficiency becomes double....
- An object is placed at the focus of concave lens having focal length f. What is the magnification and distance of the image from...
- A coil having N turns is wound tightly in the form of a spiral with inner and outer radii 'a' and 'b' respectively. Find the...
- A boy of mass M moving at speed V_0 collides elastically with a mass 'm' at rest. After the collision, the two masses move at...
- The masses and radii of the earth and moon are (M_1, R_1) and (M_2, R_2) respectively. Their centres are at a distance 'r' apart....
- A uniform heavy rod of weight 10 kg ms^ -2 , cross-sectional area 100 cm^2 and length 20 cm is hanging from a fixed support....
- Match List-I with List-II. List-I: (a) Torque (b) Impulse (c) Tension (d) Surface Tension List-II: (i) MLT^ -1 (ii) MT^ -2 (iii)...
- Which of the following equations is dimensionally incorrect ? Where t = time, h = height, s = surface tension, = angle, =...
- Angular momentum of a single particle moving with constant speed along circular path :
- In an ac circuit, an inductor, a capacitor and a resistor are connected in series with X_L = R = X_C. Impedance of this circuit...
- A moving proton and electron have the same de-Broglie wavelength. If K and P denote the K.E. and momentum respectively. Then...
- Consider a galvanometer shunted with 5 resistance and 2% of current passes through it. What is the resistance of the given...
- When a rubber ball is taken to a depth of ___m in deep sea, its volume decreases by 0.5%. (The bulk modulus of rubber = 9.8...
- A particle of mass 1 kg is hanging from a spring of force constant 100 Nm^ -1 . The mass is pulled slightly downward and released...
- If the sum of the heights of transmitting and receiving antennas in the line of sight of communication is fixed at 160 m, then...Not in JEE or NEET syllabus
- A square shaped wire with resistance of each side 3 is bent to form a complete circle. The resistance between two diametrically...
- A wire having a linear mass density 9.0 10^ -4 kg/m is stretched between two rigid supports with a tension of 900 N. The wire...
- A block moving horizontally on a smooth surface with a speed of 40 ms^ -1 splits into two equal parts. If one of the parts moves...