1
KCET 2019
MCQ (Single Correct Answer)
+1
-0

A transparent medium shows relation between $$i$$ and $$r$$ as shown. If the speed of light in vacuum is $$c$$, the Brewster angle for the medium is

KCET 2019 Physics - Ray Optics Question 16 English

A
30$$^\circ$$
B
45$$^\circ$$
C
60$$^\circ$$
D
90$$^\circ$$
2
KCET 2019
MCQ (Single Correct Answer)
+1
-0

If Young's double slit experiment, using monochromatic light of wavelength $$\lambda$$, the intensity of light at a point on the screen where path difference is $$\lambda$$ is $$K$$ units. The intensity of light at a point where path difference is $$\frac{\lambda}{3}$$ is

A
$$K$$
B
$$\frac{K}{4}$$
C
$$4 K$$
D
$$2 K$$
3
KCET 2019
MCQ (Single Correct Answer)
+1
-0

Due to Doppler's effect the shift in wavelength observed is $$0.1 \mathop A\limits^o$$ for a star producing wavelength $$6000 \mathop A\limits^o$$. Velocity of recession of the star will be

A
25 km/s
B
10 km/s
C
5 km/s
D
20 km/s
4
KCET 2019
MCQ (Single Correct Answer)
+1
-0

An electron is moving with an initial velocity $$\mathbf{v}=v_0 \hat{\mathbf{i}}$$ and is in a uniform magnetic field $$\mathbf{B}=B_0 \hat{\mathbf{j}}$$. Then its de-Broglie wavelength

A
remains constant
B
increases with time
C
decrease with time
D
increase and decrease periodically
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