1. ASSERTION : ϒ-radiation emission occurs after α and β-decay. REASON : Energy levels occur in nucleus.
Correct!
Wrong!
2. ASSERTION : When an object is placed between two plane parallel mirrors, then all the images found are of equal intensity. REASON : In case of plane parallel mirrors, only two images are possible.
Correct!
Wrong!
3. ASSERTION : Electromagnetic radiations exert pressure. REASON : Electromagnetic-waves carry both.
Correct!
Wrong!
4. ASSERTION : A capacitor of suitable capacitance can be used in an A.C. circuit in place of the choke coil. REASON : A capacitor blocks D.C. and allows A.C. only.
Correct!
Wrong!
5. ASSERTION : Magnetic force between two short magnets, when they are co-axial follows inverse square law of distance. REASON : The magnetic forces between two poles do not follow inverse square law of distance.
Correct!
Wrong!
6. ASSERTION : Voltameter measures current more accurately than ammeter. REASON : Relative error will be small if measured from voltameter.
Correct!
Wrong!
7. ASSERTION : If a dielectric is placed in external field then field inside dielectric will be less than applied field. REASON : Electric field will induce dipole moment opposite to field direction.
Correct!
Wrong!
8. ASSERTION : Acceleration of charged particle in nonuniform electric field does not depend on velocity of charged particle. REASON : Charge is an invariant quantity. That is amount of charge on particle does not depend on frame of reference.
Correct!
Wrong!
9. ASSERTION : The bob of a simple pendulum is a ball with full of water. If a fine hole is made in the bottom of the ball, the time period first increases and then decreases. REASON : As water flows out of the bob, the weight of bob decreases.
Correct!
Wrong!
10. ASSERTION : Specific heat of a gas at constant pressure is greater than its specific heat at constant volume. REASON : At constant pressure, some heat is spent in expansion of the gas.
Correct!
Wrong!
Physics day-7
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