Question

1. The dimensional formula for win the relation y = A sin otis
(a) [M°LºT]
(b) [MLT]
(b) [ML°T°]
(d) [M°LT']
3. A particle performing SHM starts from mean position. The phase of that particle is tc/2 when it has
(a) maximum displacement
(b) maximum velocity
(c) maximum energy
(d) maximum kinetic energy
4. Specific heat of a gas during an isothermal change is
(a) zero
(b) positive
(c) negative
(d) infinity
5. Specific heat of a substance at the melting point becomes
(a) low
(b) high
(c) remain unchanged
(d)infinite
6. Excess pressure in a liquid bubble is Pa and excess pressure in a liquid drop is P2. Then
(a) P₂ = P2
(b) P1 = 2P2
(c) 2P1 = P2
(d) P1 = 4 P2
7. With increase in temperature, surface tension of a liquid
(a) increases
(b) decreases
(c) remain the same
(d) none of these.
8. Escape speed on the surface of a planet varies with the mass m of a body as
(a) mº
(b)m
(c) m-1
(d) m2
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Answer 1

Answer:1. B

2. D

3. A

4. A

5. B

6. C

Explanation: