1
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

A charged particle moving in a uniform magnetic field and losses $$16 \%$$ of its kinetic energy. The radius of curvature of its path changes by

A
8%
B
4%
C
10%
D
16%
2
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

A thin but rigid semicircular wire frame of radius $$r$$ is hinged at $$O$$ and can rotate in its own vertical plane. A smooth peg $$P$$ starts from $$O$$ and moves horizontally with constant speed $$2 v_0$$ lifting the frame upward as shown in figure. Find the angular velocity $$\omega$$ of the frame when its diameter makes an angle of $$60^{\circ}$$ with vertical.

BITSAT 2023 Physics - Rotational Motion Question 1 English

A
$$v_0 / r$$
B
$$v_0 / 2 r$$
C
$$2 v_0 / r$$
D
$$v_0 r$$
3
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

After two hours one-eight of the starting amount of a certain radioactive isotope remained undecayed. The half-life of the isotope is

A
15 min
B
40 min
C
45 min
D
4 h
4
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

A thin plano-convex lens of focal length $$f$$ is split into two halves one of the halves is shifted along the optical axis. The separation between object and image formed by one of the half-lenses is 2.4 and the magnification of same lens is 2. If $$f$$ and $$d$$ be the focal length of the lens and separation between the two halves respectively then

BITSAT 2023 Physics - Ray Optics Question 1 English

A
f = 0.53 m
B
f = 0.6 m
C
f = 0.5 m
D
d = 0.9 m
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