In the LCR circuit shown in fig, the voltmeter V and ammeter A reading are

Questions from KCET 2022

1. Rotational kinetic energy of a body is given by the equation where is moment of inertia and angular velocity of the body. The dimensional formula of I using the above equation is

2. If and represent inductance, capacitance and resistance respectively, then which of the following does not have the dimension of the frequency?

3. A truck of mass Ton is moving with a speed of . Sand is poured at the rate of per minute. How much force is needed to keep it moving with the same speed?

4. A horizontal force is applied on a block of weight to hold against a vertical wall. The minimum value of force needed to hold the block if the coefficient of friction of the surface is

5. A bird is inside a wire cage hung from a spring balance. The spring balance reading is when the bird is flying and when it is at rest inside the cage. Which of the following is correct?

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1. A car starts from rest and accelerates at At , a ball is dropped out of a window by a person sitting in the car. What is the velocity and acceleration of the ball at ? (Take

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2. If and respectively denote energy and gravitational constant, then has the dimensions of:

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3. The de Broglie wavelength of an electron moving with kinetic energy of is nearly

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4. A wheel with metallic spokes each long is rotated with a speed of in a plane perpendicular to a magnetic field of . The induced emf between the axle and rim of the wheel will be,

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5. Calculate the acceleration of the block and trolly system shown in the figure The coefficient of kinetic friction between the trolly and the surface is , mass of the string is negligible and no other friction exists

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