Physics (Theory And Practicals) - For Class SSC - Part 2 (Science Group) - Solved Model papers 2020 -2021- AS PER CONDENSED SYLLABUS

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Physics
For Class X Or SSC - Part 2 (Science Groups)
Solved Model papers 2020 -2021
As Per condensed Syllabus

Solution Of Numerical

Q.07: A body starting from rest acquires a velocity of 10 m/s in 5 seconds. Calculate
a) the acceleration
b) the distance covered by the body in 5 seconds.
Solution:

Q.08) Calculate the length of second's pendulum. (g = 9.8 m/s².
Solution:

Q.09: The potential difference applied to the terminals of a portable radio is 9.0 volts. Find the resistance of the radio if a current of 25 mA is flowing through it.
Solution:

Q.10: How much work done to displace horizontally a body 400 cm by a force of 200 N, whose angle with the horizontal is 30°.
Solution:-
Data:-
W = ?
F = 200 N
S = 400 cm = ⁴⁰⁰ / ₁₀₀ = 4 m
θ = 30°

Formula:-
W = F. S cos θ

Calculation:-
W = (200) . (4) cos 30°
W = 800 cos 30°
W = 800 (0.86)

Result:- W = 688 Joules Ans.

Q.11: 0.5 Kg of copper needs 1905 J of hest to raise its temperature through 10°C. Calculate the heat Capacity of the sample.
Solution:

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Special thanks to Sir Sajjad Akber chandio